Windows Kernel

Development Platform:
Visual C++

isfband.cpp：Code Content
							#include "priv.h"
#include "sccls.h"
#include "iface.h"
#include "itbar.h"
#include "itbdrop.h"
#include "bands.h"
#include "isfband.h"
#include "menubar.h"
#include "resource.h"
#include "menuisf.h"
#include "../lib/dpastuff.h"
#include "shlwapi.h"
#include "cobjsafe.h"
#include <iimgctx.h>
#include "dbgmem.h"
#include "inpobj.h"
#include "uemapp.h"
#include "mnfolder.h"
#include "channel.h"
#define DM_VERBOSE      0       // misc verbose traces
#define DM_PERSIST      0
#define TF_BANDDD   TF_BAND
#define DM_RENAME       0
#define DM_MISC         0       // miscellany
#define SZ_PROPERTIESA     "properties"
#define SZ_PROPERTIES      TEXT(SZ_PROPERTIESA)
#define SZ_REGKEY_ADVFOLDER        TEXT("Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced")
// {F47162A0-C18F-11d0-A3A5-00C04FD706EC}
static const GUID TOID_ExtractImage = { 0xf47162a0, 0xc18f, 0x11d0, { 0xa3, 0xa5, 0x0, 0xc0, 0x4f, 0xd7, 0x6, 0xec } };
#define SUPERCLASS CToolBand
HRESULT FakeGetUIObjectOf( IShellFolder *psf, LPCITEMIDLIST pidl, UINT * prgfFlags, REFIID riid, void **ppvObj );
extern UINT g_idFSNotify;
HRESULT CExtractImageTask_Create( CLogoBase *plb,
                                  LPEXTRACTIMAGE pExtract,
                                  LPCWSTR pszCache,
                                  DWORD dwItem,
                                  int iIcon,
                                  DWORD dwFlags,
                                  LPRUNNABLETASK * ppTask );
class CExtractImageTask : public IRunnableTask
{
    public:
        STDMETHOD ( QueryInterface ) ( REFIID riid, void **ppvObj );
        STDMETHOD_( ULONG, AddRef ) ();
        STDMETHOD_( ULONG, Release ) ();
        STDMETHOD (Run)( void );
        STDMETHOD (Kill)( BOOL fWait );
        STDMETHOD (Suspend)( );
        STDMETHOD (Resume)( );
        STDMETHOD_( ULONG, IsRunning )( void );
    protected:
        CExtractImageTask( HRESULT * pHr,
                           CLogoBase *plb,
                           IExtractImage * pImage,
                           LPCWSTR pszCache,
                           DWORD dwItem,
                           int iIcon,
                           DWORD dwFlags );
        ~CExtractImageTask();
        HRESULT InternalResume();
    friend HRESULT CExtractImageTask_Create( CLogoBase* plb,
                                                 LPEXTRACTIMAGE pExtract,
                                                 LPCWSTR pszCache,
                                                 DWORD dwItem,
                                                 int iIcon,
                                                 DWORD dwFlags,
                                                 LPRUNNABLETASK * ppTask );
        LONG            m_cRef;
        LONG            m_lState;
        LPEXTRACTIMAGE  m_pExtract;
        LPRUNNABLETASK  m_pTask;
        WCHAR           m_szPath[MAX_PATH];
        DWORD           m_dwFlags;
        DWORD           m_dwItem;
        CLogoBase*      m_plb;
        HBITMAP         m_hBmp;
        int             m_iIcon;
};
//=================================================================
// Implementation of CISFBand
//=================================================================
CISFBand::CISFBand() : CToolbarBand()
{
    _fCanFocus = TRUE;
    _eUemLog = UEMIND_NIL;
    _dwPriv = -1;
    _fHasOrder = TRUE;  // ISFBand always has an order...
    _fAllowDropdown = BOOLIFY(SHRegGetBoolUSValue(SZ_REGKEY_ADVFOLDER, TEXT("CascadeFolderBands"),
                    FALSE,
                    FALSE)); 
    // Should we enable logging of arbirary events?
//    _pguidUEMGroup = &UEMIID_SHELL;
    ASSERT(_pguidUEMGroup == NULL);
    // Assert that this class is ZERO INITed.
    ASSERT(!_pbp);
    ASSERT(FALSE == _fCreatedBandProxy);
}
CISFBand::~CISFBand()
{
    if(_pbp && _fCreatedBandProxy)
        _pbp->SetSite(NULL);
    ATOMICRELEASE(_pbp);
}
HRESULT CISFBand_CreateInstance(IUnknown* pUnkOuter, IUnknown** ppunk, LPCOBJECTINFO poi)
{
    // aggregation checking is handled in class factory
    HRESULT hres;
    CISFBand* pObj;
    hres = E_OUTOFMEMORY;
    pObj = new CISFBand();
    if (pObj)
    {
        *ppunk = SAFECAST(pObj, IShellFolderBand*);
        hres = S_OK;
    }
    return hres;
}
/*----------------------------------------------------------
Purpose: See CISFBand::Init for an explanation on the parameters.
*/
CISFBand* CISFBand_CreateEx(IShellFolder* psf, LPCITEMIDLIST pidl)
{
    CISFBand * p = NULL;
    if (psf || pidl)
    {
        p = new CISFBand();
        if (p)
        {
            IShellFolderBand * psfband = SAFECAST(p, IShellFolderBand *);
            if (psfband && FAILED(psfband->InitializeSFB(psf, pidl)))
            {
                delete p;
                p = NULL;
            }
        }
    }
    return p;
}
#ifdef DEBUG
#define _AddRef(psz) { ++_cRef; TraceMsg(TF_SHDREF, "CDocObjectView(%x)::QI(%s) is AddRefing _cRef=%d", this, psz, _cRef); }
#else
#define _AddRef(psz)    ++_cRef
#endif
HRESULT CISFBand::QueryInterface(REFIID riid, void **ppvObj)
{
    static const QITAB qit[] = {
        QITABENT(CISFBand, IShellFolderBand),
        { 0 },
    };
    HRESULT hres = QISearch(this, qit, riid, ppvObj);
    if (FAILED(hres))
        hres = CToolBand::QueryInterface(riid, ppvObj);
    if (FAILED(hres))
        hres = CSFToolbar::QueryInterface(riid, ppvObj);
    if (S_OK != hres)
    {
        // HACKHACK: this is yucko!
        if (IsEqualIID(riid, CLSID_ISFBand))
        {
            *ppvObj = (void*)this;
            _AddRef(TEXT("CLSID_ISFBand"));
            return S_OK;
        }
    }
    return hres;
}
#if 0
LPITEMIDLIST PidlFromFolderAndSubPath(int iFolder, TCHAR *pszSubPath)
{
    LPITEMIDLIST pidl = NULL;
    if (SUCCEEDED(SHGetSpecialFolderLocation(NULL, iFolder, &pidl))) {
        if (pszSubPath) {
            TCHAR szPath[MAX_PATH];
            SHGetPathFromIDList(pidl, szPath);
            PathCombine(szPath, szPath, pszSubPath);
            ILFree(pidl);
            pidl = ILCreateFromPath(szPath);
        }
    }
    return pidl;
}
#endif
//***   ILIsParentCSIDL -- like ILIsParent, but accepts a CSIDL_* for pidl1
// NOTES
//  TODO move to shlwapi (if/when idlist.c moves there)?
//
STDAPI_(BOOL) ILIsParentCSIDL(int csidl1, LPCITEMIDLIST pidl2, BOOL fImmediate)
{
    LPITEMIDLIST pidlSpec;
    BOOL fRet = FALSE;
    if (SUCCEEDED(SHGetSpecialFolderLocation(NULL, csidl1, &pidlSpec))) {
        fRet = ILIsParent(pidlSpec, pidl2, fImmediate);
        ILFree(pidlSpec);
    }
    return fRet;
}
/*----------------------------------------------------------
Purpose: IShellFolderBand::InitializeSFB
         - supply IShellFolder with no PIDL if you want to view some
           ISF (either already instantiated from the filesystem or
           some non-filesystem ISF) that you do NOT want to receive
           notifies from (either from SHChangeNotify nor from
           IShellChangeNotify)
         - supply a PIDL with no IShellFolder for a full-blown band
           looking at a shell namespace (rooted on desktop) item.
*/
HRESULT CISFBand::InitializeSFB(IShellFolder *psf, LPCITEMIDLIST pidl)
{
    HRESULT hres = S_OK;
    // Did they try to add the Recycle Bin? If so we need to reject it
    // for consistance reasons.  We also reject the Temp. Internet Files
    // for security reasons.
    if (pidl && (ILIsParentCSIDL(CSIDL_BITBUCKET, pidl, FALSE) ||
                ILIsParentCSIDL(CSIDL_INTERNET_CACHE, pidl, FALSE)))
    {
        // this will eventually show up as IDS_CANTISFBAND
        TraceMsg(DM_TRACE, "cib.isfb: recycle => E_INVALIDARG");
        hres = E_INVALIDARG;
    }
    if (SUCCEEDED(hres))
        hres = CSFToolbar::SetShellFolder(psf, pidl);
    if (SUCCEEDED(hres))
        _AfterLoad();
    return hres;
}
/*----------------------------------------------------------
Purpose: IShellFolderBand::SetBandInfoSFB
*/
HRESULT CISFBand::SetBandInfoSFB(BANDINFOSFB * pbi)
{
    ASSERT(pbi);
    if (!pbi)
        return E_POINTER;
    if ((pbi->dwMask & ISFB_MASK_INVALID) ||
        (pbi->dwMask & ISFB_MASK_VIEWMODE) && (pbi->wViewMode & ~3))
        return E_INVALIDARG;
    // We don't handle ISFB_MASK_SHELLFOLDER and ISFB_MASK_IDLIST
    // in Set because there's a lot of work to resync pidl, psf, and
    // notifcations in the toolbar.  If somebody wants to do it,
    // more power to ya.  :)
    if (pbi->dwMask & (ISFB_MASK_SHELLFOLDER | ISFB_MASK_IDLIST))
        return E_INVALIDARG;
    if (pbi->dwMask & ISFB_MASK_STATE)
    {
        if (pbi->dwStateMask & ISFB_STATE_DEBOSSED)
            _fDebossed = BOOLIFY(pbi->dwState & ISFB_STATE_DEBOSSED);
        if (pbi->dwStateMask & ISFB_STATE_ALLOWRENAME)
            _fAllowRename = BOOLIFY(pbi->dwState & ISFB_STATE_ALLOWRENAME);
        if (pbi->dwStateMask & ISFB_STATE_NOSHOWTEXT)
            _fNoShowText = BOOLIFY(pbi->dwState & ISFB_STATE_NOSHOWTEXT);
        if (pbi->dwStateMask & ISFB_STATE_CHANNELBAR)
            _fChannels = BOOLIFY(pbi->dwState & ISFB_STATE_CHANNELBAR);
        /* ISFB_STATE_NOTITLE: removed 970619, use cbs::SetBandState */
        if (pbi->dwStateMask & ISFB_STATE_QLINKSMODE)
            _fLinksMode = BOOLIFY(pbi->dwState & ISFB_STATE_QLINKSMODE);
        if (pbi->dwStateMask & ISFB_STATE_FULLOPEN)
            _fFullOpen = BOOLIFY(pbi->dwState & ISFB_STATE_FULLOPEN);
        if (pbi->dwStateMask & ISFB_STATE_NONAMESORT)
            _fNoNameSort = BOOLIFY(pbi->dwState & ISFB_STATE_NONAMESORT);
        if (pbi->dwStateMask & ISFB_STATE_BTNMINSIZE)
            _fBtnMinSize = BOOLIFY(pbi->dwState & ISFB_STATE_BTNMINSIZE);
    }
    if (pbi->dwMask & ISFB_MASK_BKCOLOR)
    {
        _crBkgnd = pbi->crBkgnd;
        _fHaveBkColor = TRUE;
        if (EVAL(_hwndTB))
            SHSetWindowBits(_hwndTB, GWL_STYLE, TBSTYLE_CUSTOMERASE, TBSTYLE_CUSTOMERASE);
        ASSERT(_hwnd);
        if (_hwndPager)
        {
            TraceMsg(TF_BAND, "cib.sbisfb: Pager_SetBkColor(_hwnd=%x crBkgnd=%x)", _hwnd, _crBkgnd);
            Pager_SetBkColor(_hwnd, _crBkgnd);
        }
    }
    // BUGBUG (kkahl): We don't support changing these once TB is created
    if (pbi->dwMask & ISFB_MASK_COLORS)
    {
        _crBtnLt = pbi->crBtnLt;
        _crBtnDk = pbi->crBtnDk;
        _fHaveColors = TRUE;
    }
    if (pbi->dwMask & ISFB_MASK_VIEWMODE)
    {
        _uIconSize = (pbi->wViewMode & 3); // stored in a 2-bit field currently...
        // only force no recalc if one of the recalcable fields was set
        _fNoRecalcDefaults = TRUE;
    }
    // If the bandsite queried us before, let it know the info may have changed
    if (_fInitialized)
        _BandInfoChanged();
    return S_OK;
}
/*----------------------------------------------------------
Purpose: IShellFolderBand::GetBandInfoSFB
*/
HRESULT CISFBand::GetBandInfoSFB(BANDINFOSFB * pbi)
{
    ASSERT(pbi);
    if (!pbi)
        return E_POINTER;
    if (pbi->dwMask & ISFB_MASK_STATE)
    {
        pbi->dwState = 0;
        pbi->dwStateMask = ISFB_STATE_ALL;
        if (_fDebossed)
            pbi->dwState |= ISFB_STATE_DEBOSSED;
        if (_fAllowRename)
            pbi->dwState |= ISFB_STATE_ALLOWRENAME;
        if (_fNoShowText)
            pbi->dwState |= ISFB_STATE_NOSHOWTEXT;
        if (_fLinksMode)
            pbi->dwState |= ISFB_STATE_QLINKSMODE;
        if (_fFullOpen)
            pbi->dwState |= ISFB_STATE_FULLOPEN;
        if (_fNoNameSort)
            pbi->dwState |= ISFB_STATE_NONAMESORT;
        if (_fBtnMinSize)
            pbi->dwState |= ISFB_STATE_BTNMINSIZE;
    }
    if (pbi->dwMask & ISFB_MASK_BKCOLOR)
    {
        pbi->crBkgnd = (_fHaveBkColor) ? _crBkgnd : CLR_DEFAULT;
    }
    if (pbi->dwMask & ISFB_MASK_COLORS)
    {
        if (_fHaveColors)
        {
            pbi->crBtnLt = _crBtnLt;
            pbi->crBtnDk = _crBtnDk;
        }
        else
        {
            pbi->crBtnLt = CLR_DEFAULT;
            pbi->crBtnDk = CLR_DEFAULT;
        }
    }
    if (pbi->dwMask & ISFB_MASK_VIEWMODE)
    {
        pbi->wViewMode = _uIconSize;
    }
    if (pbi->dwMask & ISFB_MASK_SHELLFOLDER)
    {
        pbi->psf = _psf;
        if (pbi->psf)
            pbi->psf->AddRef();
    }
    if (pbi->dwMask & ISFB_MASK_IDLIST)
    {
        if (_pidl)
            pbi->pidl = ILClone(_pidl);
        else
            pbi->pidl = NULL;
    }
    return S_OK;
}
// *** IInputObject methods ***
HRESULT CISFBand::TranslateAcceleratorIO(LPMSG lpMsg)
{
    if (SendMessage(_hwnd, TB_TRANSLATEACCELERATOR, 0, (LPARAM)lpMsg))
        return S_OK;
    return SUPERCLASS::TranslateAcceleratorIO(lpMsg);
}
void CISFBand::_SetCacheMenuPopup(IMenuPopup* pmp)
{
    if (!SHIsSameObject(pmp, _pmpCache)) {
        _ReleaseMenuPopup(&_pmpCache);
        _pmpCache = pmp;
        if (_pmpCache)
            _pmpCache->AddRef();
    }
}
void CISFBand::_ReleaseMenuPopup(IMenuPopup** ppmp)
{
    IUnknown_SetSite(*ppmp, NULL);
    ATOMICRELEASE(*ppmp);
}
/*----------------------------------------------------------
Purpose: Releases the held menu popup.
*/
void CISFBand::_ReleaseMenu()
{
    if (!SHIsSameObject(_pmp, _pmpCache)) {
        TraceMsg(TF_MENUBAND, "Releasing pmp %#lx", _pmp);
        _ReleaseMenuPopup(&_pmp);
    } else
        ATOMICRELEASE(_pmp);
}
//***
// ENTRY/EXIT
//  S_OK        desktop browser
//  S_FALSE     other browser (explorer, OC, etc.)
//  E_xxx       not a browser at all (e.g. band asking tray)
HRESULT IsDesktopBrowser(IUnknown *punkSite)
{
    HRESULT hr;
    IServiceProvider *psp;
    IUnknown *punk;
    hr = E_FAIL;
    if (SUCCEEDED(IUnknown_QueryService(punkSite, SID_STopLevelBrowser, IID_IServiceProvider, (void**)&psp))) {
        hr = S_FALSE;
        if (SUCCEEDED(psp->QueryInterface(SID_SShellDesktop, (void**)&punk))) {
            hr = S_OK;
            punk->Release();
        }
        psp->Release();
    }
    TraceMsg(DM_VERBOSE, "idb: ret hrDesk=%x (0=dt 1=sh e=!brow)", hr);
    return hr;
}
/*----------------------------------------------------------
Purpose: IDockingWindow::SetSite method.
*/
HRESULT CISFBand::SetSite(IUnknown* punkSite)
{
    _ReleaseMenu();
    SUPERCLASS::SetSite(punkSite);
    if (_punkSite)
    {
        if (!_hwndTB)
            _CreateToolbar(_hwndParent);
        IUnknown_SetOwner(_psf, SAFECAST(this, IDeskBand*));
        _Initialize();  // BUGBUG always or just on 1st SetSite?
    }
    else
        IUnknown_SetOwner(_psf, NULL);
    // BUGBUG: the below is bogus - no need to throw away and recreate.
    // First destroy the band proxy
    // Call SetSite(NULL) only if you own
    // if not, it's the parent from whom you got it via QS who will call SetSite(NULL)
    if(_pbp && _fCreatedBandProxy)
        _pbp->SetSite(NULL);
    ATOMICRELEASE(_pbp);
    _fCreatedBandProxy = FALSE;
    // Need a bandproxy
    QueryService_SID_IBandProxy(punkSite, IID_IBandProxy, &_pbp, NULL);
    if(!_pbp)
    {
        // We need to create it ourselves since our parent couldn't help
        ASSERT(FALSE == _fCreatedBandProxy);
        HRESULT hres;
        hres = CreateIBandProxyAndSetSite(punkSite, IID_IBandProxy, &_pbp, NULL);
        if(_pbp)
        {
            ASSERT(S_OK == hres);
            _fCreatedBandProxy = TRUE;
        }
    }
    ASSERT(_pbp);
    return S_OK;
}
void CISFBand::_Initialize()
{
    _fDesktop = (IsDesktopBrowser(_punkSite) == S_OK);
    return;
}
/*----------------------------------------------------------
Purpose: IDockingWindow::CloseDW method.
*/
HRESULT CISFBand::CloseDW(DWORD dw)
{
    _fClosing = TRUE;
    // close down the task scheduler ...
    if ( _pTaskScheduler )
        ATOMICRELEASE( _pTaskScheduler );
    _UnregisterToolbar();
    EmptyToolbar();
    IUnknown_SetOwner(_psf, NULL);
    _SetCacheMenuPopup(NULL);
    // should get freed in EmptyToolbar();
    ASSERT(!_hdpa);
    return SUPERCLASS::CloseDW(dw);
}
/*----------------------------------------------------------
Purpose: IDockingWindow::ShowDW method
*/
HRESULT CISFBand::ShowDW(BOOL fShow)
{
    HRESULT hres = S_OK;
    SUPERCLASS::ShowDW(fShow);
    if (fShow)
    {
        _fShow = TRUE;
        if (_fDirty)
        {
            _FillToolbar();
        }
        if (!_fDelayInit)
        {
            _RegisterToolbar();
        }
    }
    else
    {
        _fShow = FALSE;
    }
    return hres;
}
void CISFBand::_StopDelayPainting()
{
    if (_fDelayPainting) {
        _fDelayPainting = FALSE;
        // May be called by background thread
        // Use PostMessage instead of SendMessage to avoid deadlock
        PostMessage(_hwndTB, WM_SETREDRAW, TRUE, 0);
        if (_hwndPager)
            PostMessage(_hwnd, PGM_RECALCSIZE, 0L, 0L);
    }
}
HWND CISFBand::_CreatePager(HWND hwndParent)
{
    // don't create a pager for isfbands
    return hwndParent;
}
void CISFBand::_CreateToolbar(HWND hwndParent)
{
    if (_fHaveBkColor)
        _dwStyle |= TBSTYLE_CUSTOMERASE;
    CSFToolbar::_CreateToolbar(hwndParent);
    if ( _fHaveBkColor )
        ToolBar_SetInsertMarkColor(_hwndTB, GetSysColor( COLOR_BTNFACE ));
    ASSERT(_hwndTB);
    SendMessage(_hwndTB, TB_SETEXTENDEDSTYLE, TBSTYLE_EX_DRAWDDARROWS, TBSTYLE_EX_DRAWDDARROWS);
    if(_fChannels)
    {
        SHSetWindowBits(_hwndTB, GWL_EXSTYLE, dwExStyleRTLMirrorWnd, 0);        
    }    
    _hwnd = _hwndPager ? _hwndPager : _hwndTB;
    if (_fHaveColors)
    {
        COLORSCHEME cs;
        cs.dwSize = SIZEOF(cs);
        cs.clrBtnHighlight  = _crBtnLt;
        cs.clrBtnShadow     = _crBtnDk;
        SendMessage(_hwndTB, TB_SETCOLORSCHEME, 0, (LPARAM) &cs);
    }
}
int CISFBand::_GetBitmap(int iCommandID, PIBDATA pibdata, BOOL fUseCache)
{
    int iBitmap;
    if ( _uIconSize == ISFBVIEWMODE_LOGOS )
    {
        LPRUNNABLETASK pTask = NULL;
        DWORD dwPriority = 0;
        // fetch the logo instead...
        ASSERT(!_fDelayPainting);
       // Warning - cannot hold ptask in a member variable - it will be a circular reference
        iBitmap = GetLogoIndex( iCommandID, pibdata->GetPidl(), &pTask, &dwPriority, NULL );
        if (pTask)
        {
            AddTaskToQueue(pTask, dwPriority, (DWORD)iCommandID);
            ATOMICRELEASE(pTask);
        }
    }
    else
        iBitmap = CSFToolbar::_GetBitmap(iCommandID, pibdata, fUseCache);
    return iBitmap;
}
void CISFBand::_SetDirty(BOOL fDirty)
{
    CSFToolbar::_SetDirty(fDirty);
    if (fDirty)
        IUnknown_Exec(_punkSite, &CGID_PrivCITCommands, CITIDM_SET_DIRTYBIT, TRUE, NULL, NULL);
}
BOOL CISFBand::_UpdateIconSize(UINT uIconSize, BOOL fUpdateButtons)
{
    BOOL fChanged = (_uIconSize != uIconSize);
    _uIconSize = uIconSize;
    HIMAGELIST himl = NULL;
    if ( uIconSize == ISFBVIEWMODE_LOGOS )
    {
        if ( SUCCEEDED( InitLogoView()))
        {
            himl = GetLogoHIML();
        }
        if ( himl )
        {
            SendMessage(_hwndTB, TB_SETIMAGELIST, 0, (LPARAM)himl);
            _UpdateButtons();
        }
    }
    if ( !himl )
        fChanged |= CSFToolbar::_UpdateIconSize(uIconSize,fUpdateButtons);
    return fChanged;
}
void CISFBand::_UpdateVerticalMode(BOOL fVertical)
{
    _fVertical = (fVertical != 0);
    TraceMsg(TF_BAND, "ISFBand::_UpdateVerticalMode going %hs", _fVertical ? "VERTICAL" : "HORIZONTAL");
    ASSERT(_hwnd);
    if (_hwndPager) {
        SHSetWindowBits(_hwnd, GWL_STYLE, PGS_HORZ|PGS_VERT,
            _fVertical ? PGS_VERT : PGS_HORZ);
    }
    if (_hwndTB)
    {
        SHSetWindowBits(_hwndTB, GWL_STYLE, TBSTYLE_WRAPABLE | CCS_VERT,
            TBSTYLE_WRAPABLE | (_fVertical ? CCS_VERT : 0));
    }
}
HRESULT IUnknown_QueryBand(IUnknown *punk, DWORD dwBandID, IDeskBand** ppstb, DWORD* pdwState, LPWSTR pszName, int cchName)
{
    HRESULT hr;
    IBandSite *pbs;
    hr = punk->QueryInterface(IID_IBandSite, (void**)&pbs);
    if (SUCCEEDED(hr)) {
        hr = pbs->QueryBand(dwBandID, ppstb, pdwState, pszName, cchName);
        pbs->Release();
    }
    return hr;
}
#define CISFBAND_GETBUTTONSIZE()  (_hwndTB ?  (LONG)SendMessage(_hwndTB, TB_GETBUTTONSIZE, 0, 0L) : MAKELONG(16, 16))
//
// _GetIdealSize
//
// calculates ideal height and width for band and passes back in
// psize, if psize isn't NULL; return value is band's 'ideal length'
// (ideal height if vertical, else ideal width)
//
int CISFBand::_GetIdealSize(PSIZE psize)
{
    SIZE size;
    LONG lButtonSize = CISFBAND_GETBUTTONSIZE();
    RECT rc = {0};
    if (_hwndTB)
        GetClientRect(_hwndTB, &rc);
    if (_fVertical)
    {
        // set width to be max of toolbar width and toolbar button width
        size.cx = max(RECTWIDTH(rc), LOWORD(lButtonSize));
        // have toolbar calculate height given that width
        SendMessage(_hwndTB, TB_GETIDEALSIZE, TRUE, (LPARAM)&size);
    }
    else
    {
        // set height to be max of toolbar width and toolbar button width
        size.cy = max(RECTHEIGHT(rc), HIWORD(lButtonSize));
        // have toolbar calculate width given that height
        SendMessage(_hwndTB, TB_GETIDEALSIZE, FALSE, (LPARAM)&size);
    }
    // BUGBUG: I'm ripping out this check as it causes nt5 bug #225449 (disappearing chevron).
    // _fDirty == TRUE doesn't mean "we're still waiting to call _FillToolbar", it just means
    // "we need to persist out this order stream".  The bit gets set after a drag-and-drop
    // reordering, but we don't call a matching _FillToolbar in that case.
#if 0
    if (_fDirty)
    {
        // until the TB is populated, we get back bogus data from the
        // above.  so use -1 until we actually have a correct answer.
        size.cx = size.cy = -1;
    }
#endif
    if (psize)
        *psize = size;
    return _fVertical ? size.cy : size.cx;
}
/*----------------------------------------------------------
Purpose: IDeskBand::GetBandInfo method
*/
HRESULT CISFBand::GetBandInfo(DWORD dwBandID, DWORD fViewMode,
                              DESKBANDINFO* pdbi)
{
    HRESULT hr = S_OK;
    _dwBandID = dwBandID;
    // We don't know the default icon size until GetBandInfo is called.
    // After we set the default, we pay attention to the context menu.
    //
    if (!_fNoRecalcDefaults)
    {
        _uIconSize = (fViewMode & (DBIF_VIEWMODE_FLOATING |DBIF_VIEWMODE_VERTICAL)) ? ISFBVIEWMODE_LARGEICONS : ISFBVIEWMODE_SMALLICONS;
        _fNoRecalcDefaults = TRUE;
    }
    if (!_fInitialized) {
        _fInitialized = TRUE;
        _UpdateIconSize(_uIconSize, FALSE);
        _UpdateShowText(_fNoShowText);
    }
    // we treat floating the same as vertical
    _UpdateVerticalMode(fViewMode & (DBIF_VIEWMODE_FLOATING |DBIF_VIEWMODE_VERTICAL));
    LONG lButtonSize = CISFBAND_GETBUTTONSIZE();
    pdbi->dwModeFlags = DBIMF_VARIABLEHEIGHT | DBIMF_USECHEVRON;
    if (_fDebossed)
        pdbi->dwModeFlags |= DBIMF_DEBOSSED;
    pdbi->ptMinSize.x = 0;
    pdbi->ptMaxSize.y = 32000; // random
    pdbi->ptIntegral.y = 1;
    pdbi->ptIntegral.x = 1;
    if (!_fFullOpen)
        _iIdealLength = _GetIdealSize((PSIZE)&pdbi->ptActual);
    // CalcMinWidthHeight {
    // BUGBUG need pager msg for cx/cy scroll
    #define g_cxScrollbar   (GetSystemMetrics(SM_CXVSCROLL) * 3 / 4)
    #define g_cyScrollbar   (GetSystemMetrics(SM_CYVSCROLL) * 3 / 4)
    #define CX_TBBUTTON_MAX (16 + CX_FILENAME_AVG)  // button + name
    #define CY_TBBUTTON_MAX (16)                    // button
    int csBut, csButMin, clBut, clButMin, clScroll;
    // set up short/long aliases
    if (_fVertical) {
        csBut = LOWORD(lButtonSize);
        if (_fBtnMinSize)
            csButMin = min(csBut, CX_TBBUTTON_MAX);
        else
            csButMin = 0;   // people like to shrink things way down, so let 'em
        clBut = HIWORD(lButtonSize);
        clButMin = clBut;
        //ASSERT(min(clBut, CY_TBBUTTON_MAX) == clButMin);  // fails!
        clScroll = g_cyScrollbar;
    }
    else {
        csBut = HIWORD(lButtonSize);
        csButMin = csBut;
        //ASSERT(min(csBut, CY_TBBUTTON_MAX) == csButMin);  // fails!
        clBut = LOWORD(lButtonSize);
        clButMin = min(clBut, CX_TBBUTTON_MAX);
        clScroll = g_cxScrollbar;
        // nt5:176448: integral for horz
        //pdbi->ptIntegral.y = csBut;   this is the cause for 287082 and 341592
    }
    // n.b. virt pdbi->pt.x,y is really phys y,x (i.e. phys long,short)
    pdbi->ptMinSize.x = 0;
    pdbi->ptMinSize.y = csButMin;
    DWORD dwState = BSSF_NOTITLE;
    IUnknown_QueryBand(_punkSite, dwBandID, NULL, &dwState, NULL, 0);
    if (dwState & BSSF_NOTITLE) {   // _fNoTitle
        int i, cBut, clTmp;
        // cbut=    text    notext
        // horz     1       4
        // vert     1       1
        cBut = 1;
        if (!_fVertical && _fNoShowText) {
            // special-case for QLaunch so see several buttons
            cBut = 4;   // for both QLaunch and arbitrary ISF band
        }
        pdbi->ptMinSize.x = cBut * clButMin;
        if (_hwndPager) {
            // tack on extra space for pager arrows
            pdbi->ptMinSize.x += 2 * clScroll;
        }
        i = (int)SendMessage(_hwndTB, TB_BUTTONCOUNT, 0, 0);
        if (i <= cBut) {
            clTmp = i * clBut;
            if (clTmp < pdbi->ptMinSize.x) {
                // scrollbars take as much space as button would
                // so just do the button
                pdbi->ptMinSize.x = clTmp;
            }
        }
    }
    // }
#if 0 // BUGBUG don't we need this?
    if (_fHaveBkColor) {
        pdbi->crBkgnd = _crBkgnd;
        pdbi->dwModeFlags |= DBIMF_BKCOLOR;
    }
#endif
    hr = _GetTitleW(pdbi->wszTitle, ARRAYSIZE(pdbi->wszTitle));
    if (FAILED(hr))
    {
        // we don't support title
#ifdef DEBUG
        if (pdbi->dwMask & DBIM_TITLE)
            TraceMsg(DM_VERBOSE, "cisfb.gbi: patch ~DBIM_TITLE");
#endif
        pdbi->dwMask &= ~DBIM_TITLE;
    }
    return hr;
}
LRESULT CISFBand::_OnCustomDraw(NMCUSTOMDRAW* pnmcd)
{
    NMTBCUSTOMDRAW * ptbcd = (NMTBCUSTOMDRAW *)pnmcd;
    LRESULT lres = CDRF_DODEFAULT;
    switch (pnmcd->dwDrawStage)
    {
    case CDDS_PREPAINT:
        // if there is a palette, then quietly select it into the DC ...
        if ( _hpalHalftone && _uIconSize == ISFBVIEWMODE_LOGOS )
        {
            ASSERT( pnmcd->hdc );
            _hpalOld = SelectPalette( pnmcd->hdc, _hpalHalftone, TRUE );
            // LINTASSERT(_hpalOld || !_hpalOld);   // 0 semi-ok for SelectPalette
            RealizePalette( pnmcd->hdc );
        }
        // make sure we get the postpaint as well so we can de-select the palette...
        lres = CDRF_NOTIFYPOSTPAINT;
        break;
    case CDDS_POSTPAINT:
        // if there is a palette, then quietly select it into the DC ...
        if ( _hpalHalftone && _uIconSize == ISFBVIEWMODE_LOGOS )
        {
            ASSERT( pnmcd->hdc );
            (void) SelectPalette( pnmcd->hdc, _hpalOld, TRUE );
            // we don't need a realize here, we can keep the other palette realzied, we
            // re select the old palette above, otherwise we bleed the resource....
            // RealizePalette( pnmcd->hdc );
        }
        break;
    case CDDS_PREERASE:
        if (_fHaveBkColor)
        {
            RECT rcClient;
            GetClientRect(_hwndTB, &rcClient);
            SHFillRectClr(pnmcd->hdc, &rcClient, _crBkgnd);
            lres = CDRF_SKIPDEFAULT;
        }
        break;
    }
    return lres;
}
void CISFBand::_OnDragBegin(int iItem, DWORD dwPreferedEffect)
{
    LPCITEMIDLIST pidl = _IDToPidl(iItem, &_iDragSource);
    ToolBar_MarkButton(_hwndTB, iItem, TRUE);
    DragDrop(_hwnd, _psf, pidl, dwPreferedEffect, NULL);
    ToolBar_MarkButton(_hwndTB, iItem, FALSE);
    _iDragSource = -1;
}
LRESULT CISFBand::_OnHotItemChange(NMTBHOTITEM * pnm)
{
    LPNMTBHOTITEM  lpnmhi = (LPNMTBHOTITEM)pnm;
    LRESULT lres = 0;
    if (_hwndPager && (lpnmhi->dwFlags & HICF_ARROWKEYS))
    {
        int iOldPos, iNewPos;
        RECT rc, rcPager;
        int heightPager;
        int iSelected = lpnmhi->idNew;
        iOldPos = (int)SendMessage(_hwnd, PGM_GETPOS, (WPARAM)0, (LPARAM)0);
        iNewPos = iOldPos;
        SendMessage(_hwndTB, TB_GETITEMRECT, (WPARAM)iSelected, (LPARAM)&rc);
        if (rc.top < iOldPos)
        {
             iNewPos =rc.top;
        }
        GetClientRect(_hwnd, &rcPager);
        heightPager = RECTHEIGHT(rcPager);
        if (rc.top >= iOldPos + heightPager)
        {
             iNewPos += (rc.bottom - (iOldPos + heightPager)) ;
        }
        if (iNewPos != iOldPos)
            SendMessage(_hwnd, PGM_SETPOS, (WPARAM)0, (LPARAM)iNewPos);
    }
    else
    {
        lres = CToolbarBand::_OnHotItemChange(pnm);
    }
    return lres;
}
LRESULT CISFBand::_OnNotify(LPNMHDR pnm)
{
    LRESULT lres = 0;
    switch (pnm->code)
    {
    case TBN_DROPDOWN:
        {
            LPNMTOOLBAR pnmtb = (LPNMTOOLBAR)pnm;
            lres = TBDDRET_DEFAULT;
            _DropdownItem(_IDToPidl(pnmtb->iItem), pnmtb->iItem);
        }
        break;
    default:
        lres = CSFToolbar::_OnNotify(pnm);
    }
    return lres;
}
HRESULT CISFBand::_TBStyleForPidl(LPCITEMIDLIST pidl, 
                               DWORD * pdwTBStyle, DWORD* pdwTBState, DWORD * pdwMIFFlags, int* piIcon)
{
    HRESULT hres = CSFToolbar::_TBStyleForPidl(pidl, pdwTBStyle, pdwTBState, pdwMIFFlags, piIcon);
    if (_fAllowDropdown &&
        !_fCascadeFolder && 
        ((_GetAttributesOfPidl(pidl, SFGAO_FOLDER) & SFGAO_FOLDER) ||
         IsBrowsableShellExt(pidl)))
    {
        *pdwTBStyle &= ~BTNS_BUTTON;
        *pdwTBStyle |= BTNS_DROPDOWN;
    }
    return hres;
}
LRESULT CISFBand::_OnContextMenu(WPARAM wParam, LPARAM lParam)
{
    LRESULT lres;
    lres = CSFToolbar::_OnContextMenu(wParam, lParam);
    // todo: csidl?
    TraceMsg(DM_MISC, "cib._ocm: _dwPriv=%d", _dwPriv);
    UEMFireEvent(&UEMIID_SHELL, UEME_INSTRBROWSER, UEMF_INSTRUMENT, UIBW_UICONTEXT, (_dwPriv == CSIDL_APPDATA || _dwPriv == CSIDL_FAVORITES) ? UIBL_CTXTQCUTITEM : UIBL_CTXTISFITEM);
    return lres;
}
LRESULT CISFBand::_DefWindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
    switch (uMsg) {
    case WM_SIZE:
        // forward to toolbar
        SendMessage(_hwndTB, TB_AUTOSIZE, wParam, lParam);
        if (_GetIdealSize(NULL) != _iIdealLength) {
            // our ideal size has changed since the last time bandsite
            // asked; so tell bandsite ask us for our bandinfo again
            _BandInfoChanged();
        }
        return 0;
    }
    return CSFToolbar::_DefWindowProc(hwnd, uMsg, wParam, lParam);
}
/*----------------------------------------------------------
Purpose: Set the given IMenuPopup as the submenu to expand.  Returns
         S_FALSE if the menu was modal, S_OK if it was modeless, or
         failure.
*/
HRESULT CISFBand::_SetSubMenuPopup(IMenuPopup* pmp, UINT uiCmd, LPCITEMIDLIST pidl, DWORD dwFlagsMPPF)
{
    HRESULT hres = E_FAIL;
    _ReleaseMenu();
    _pmp = pmp;
    if (pmp) {
        pmp->AddRef();
        RECT rc;
        POINT pt;
        SendMessage(_hwndTB, TB_GETRECT, uiCmd, (LPARAM)&rc);
        MapWindowPoints(_hwndTB, HWND_DESKTOP, (POINT*)&rc, 2);
        // Align the sub menu appropriately
        if (_fVertical) {
            pt.x = rc.right;
            pt.y = rc.top;
        } else {
            pt.x = rc.left;
            pt.y = rc.bottom;
        }
        //
        // Use a reflect point for the sub-menu to start
        // if the window is RTL mirrored. [samera]
        //
        if (IS_WINDOW_RTL_MIRRORED(_hwndTB)) {
            pt.x = (_fVertical) ? rc.left : rc.right;
        }
        // Tell the sub menu deskbar who we are, so it can
        // inform us later when the user navigates out of
        // its scope.
        IUnknown_SetSite(_pmp, SAFECAST(this, IDeskBand*));
        // This must be called after SetSite is done above
        _SendInitMenuPopup(pmp, pidl);
        // Show the menubar
        hres = _pmp->Popup((POINTL*)&pt, (RECTL*)&rc, dwFlagsMPPF);
    }
    return hres;
}
void CISFBand::_SendInitMenuPopup(IMenuPopup * pmp, LPCITEMIDLIST pidl)
{
}
IMenuPopup* ISFBandCreateMenuPopup(IUnknown *punk, IShellFolder* psf, LPCITEMIDLIST pidl, BANDINFOSFB * pbi, BOOL bMenuBand)
{
    return ISFBandCreateMenuPopup2(punk, NULL, psf, pidl, pbi, bMenuBand);
}
IMenuPopup* ISFBandCreateMenuPopup2(IUnknown *punk, IMenuBand* pmb, IShellFolder* psf, LPCITEMIDLIST pidl, BANDINFOSFB * pbi, BOOL bMenuBand)
{
    IMenuPopup* pmpParent = NULL;
    VARIANTARG v = {0};
    BOOL fUseCache = FALSE;
    if (punk && pidl) {
        fUseCache = TRUE;
        IUnknown_Exec(punk, &CGID_ISFBand, ISFBID_CACHEPOPUP, 0, NULL, &v);
        if (v.vt == VT_UNKNOWN && v.punkVal)
            v.punkVal->QueryInterface(IID_IMenuPopup, (void **)&pmpParent);
    }
    IMenuPopup * pmp = CreateMenuPopup2(pmpParent, pmb, psf, pidl, pbi, bMenuBand);
    if (fUseCache) {
        // cache it now
        // clear from the variant above to release v.punkVal of pmpParent
        VariantClear(&v);
        if (pmp) {
            VariantInit(&v);
            v.vt = VT_UNKNOWN;
            v.punkVal = pmp;
            pmp->AddRef();
            IUnknown_Exec(punk, &CGID_ISFBand, ISFBID_CACHEPOPUP, 0, &v, NULL);
            VariantClear(&v);
        }
    }
    ATOMICRELEASE(pmpParent);
    return pmp;
}
IMenuPopup * CISFBand::_CreateMenuPopup(
    IShellFolder * psfChild,
    LPCITEMIDLIST  pidlFull,
    BANDINFOSFB *  pbi)
{
    return ISFBandCreateMenuPopup(SAFECAST(this, IOleCommandTarget*), psfChild, pidlFull, pbi, FALSE);
}
HRESULT CISFBand::_DropdownItem(LPCITEMIDLIST pidl, UINT idCmd)
{
    HRESULT hres = E_FAIL;
    if (_pidl && _psf)
    {
        LPITEMIDLIST pidlFull = ILCombine(_pidl, pidl);
        if (pidlFull)
        {
            IShellFolder* psf;
            if (SUCCEEDED(_psf->BindToObject(pidl, NULL, IID_IShellFolder, (void **)&psf)))
            {
                RECT rc;
                SendMessage(_hwndTB, TB_GETRECT, idCmd, (LPARAM)&rc);
                MapWindowPoints(_hwndTB, HWND_DESKTOP, (POINT*)&rc, 2);
                ITrackShellMenu* ptsm;
                if (SUCCEEDED(CoCreateInstance(CLSID_TrackShellMenu, NULL, CLSCTX_INPROC_SERVER,
                    IID_ITrackShellMenu, (void**)&ptsm)))
                {
                    ptsm->Initialize(NULL, 0, 0, SMINIT_TOPLEVEL | SMINIT_VERTICAL);
                    if (SUCCEEDED(ptsm->SetShellFolder(psf, pidlFull, NULL, SMSET_TOP | SMSET_USEBKICONEXTRACTION)))
                    {
                        POINTL pt = {rc.left, rc.right};
                        hres = ptsm->Popup(_hwndTB, &pt, (RECTL*)&rc, MPPF_BOTTOM);
                    }
                    ptsm->Release();
                }
                psf->Release();
            }
            ILFree(pidlFull);
        }
    }
    return hres;
}
/*----------------------------------------------------------
Purpose: Try treating the pidl as a cascading menu item.
Returns: non-zero if succeeded
*/
LRESULT CISFBand::_TryCascadingItem(LPCITEMIDLIST pidl, UINT uiCmd)
{
    LRESULT lRet = 0;
    // Do we cascade to another submenu?
    if ((GetKeyState(VK_CONTROL) < 0) || _fCascadeFolder)
    {
        // Is the item a browsable folder?
        if ((_GetAttributesOfPidl(pidl, SFGAO_FOLDER) & SFGAO_FOLDER) ||
            IsBrowsableShellExt(pidl))
        {
            // Yes; cascade the browsable folder as a submenu
            lRet = (S_OK == _DropdownItem(pidl, uiCmd));
        }
    }
    return lRet;
}
/*----------------------------------------------------------
Purpose: Try just invoking the pidl
Returns: non-zero if succeeded
*/
LRESULT CISFBand::_TrySimpleInvoke(LPCITEMIDLIST pidl)
{
    LRESULT lRet = 0;
    if (S_OK == _pbp->IsConnected())    // Force IE
    {
        LPITEMIDLIST pidlDest;
        if (SUCCEEDED(SHGetNavigateTarget(_psf, pidl, &pidlDest, NULL)) && pidlDest &&
            ILIsWeb(pidlDest))
        {
            TCHAR szPath[MAX_PATH];
            // We want to ensure that we first give NavFrameWithFile a chance
            // since this will do the right thing if the PIDL points to a
            // shortcut.
            // If the PIDL is a shortcut, NavFrameWithFile will restore any
            // persistence information stored in the shortcut
            // if that fails - we take the default code path that simply
            // uses the PIDL
            lRet = SUCCEEDED(GetPathForItem(_psf, pidl, szPath, NULL)) &&
                   SUCCEEDED(NavFrameWithFile(szPath, (IServiceProvider *)this));
            if (!lRet)
            {
                if (EVAL(_pbp) && (SUCCEEDED(_pbp->NavigateToPIDL(pidlDest))))
                    lRet = 1;
            }
            ILFree(pidlDest);
        }
    }
    if (!lRet)
    {
        IContextMenu *pcm = (LPCONTEXTMENU)_GetUIObjectOfPidl(pidl, IID_IContextMenu);
        if (pcm)
        {
            LPCSTR pVerb = NULL;
            UINT fFlags = 0;
            // If ALT double click, accelerator for "Properties..."
            if (GetKeyState(VK_MENU) < 0)
            {
                pVerb = SZ_PROPERTIESA;
            }
            //
            //  SHIFT+dblclick does a Explore by default
            //
            if (GetKeyState(VK_SHIFT) < 0)
            {
                fFlags |= CMF_EXPLORE;
            }
            IContextMenu_Invoke(pcm, _hwndTB, pVerb, fFlags);
            pcm->Release();
        }
    }
    return lRet;
}
/*----------------------------------------------------------
Purpose: Helper function to call the menubar site's IMenuPopup::OnSelect
         method.
*/
HRESULT CISFBand::_SiteOnSelect(DWORD dwType)
{
    IMenuPopup * pmp;
    HRESULT hres = IUnknown_QueryService(_punkSite, SID_SMenuPopup, IID_IMenuPopup, (void **)&pmp);
    if (SUCCEEDED(hres))
    {
        pmp->OnSelect(dwType);
        pmp->Release();
    }
    return hres;
}
LRESULT CISFBand::_OnCommand(WPARAM wParam, LPARAM lParam)
{
    UINT uiCmd = GET_WM_COMMAND_ID(wParam, lParam);
    LRESULT lres = 0;
    TraceMsg(TF_BAND, "_OnCommand 0x%x", uiCmd);
    LPCITEMIDLIST pidl = _IDToPidl(uiCmd);
    if (pidl)
    {
        if (_eUemLog != UEMIND_NIL) 
        {
            // FEATURE_UASSIST should be grp,uiCmd
            UEMFireEvent(&UEMIID_SHELL, UEME_UIQCUT, UEMF_XEVENT, -1, (LPARAM)-1);
        }
        // Only do this if we are the quick links in the browser. The derived class will set this
        if (_pguidUEMGroup)
        {
            LPITEMIDLIST pidlFull = ILCombine(_pidl, pidl);
            if (pidlFull)
            {
                UEMFireEvent(_pguidUEMGroup, UEME_RUNPIDL, UEMF_XEVENT, (WPARAM)_psf, (LPARAM)pidl);
                SHSendChangeMenuNotify(NULL, SHCNEE_PROMOTEDITEM, 0, pidlFull);
                ILFree(pidlFull);
            }
        }
        lres = _TryCascadingItem(pidl, uiCmd);
        if (!lres && _fChannels)
            lres = _TryChannelSurfing(pidl);
        if (!lres)
            lres = _TrySimpleInvoke(pidl);
    }
    else
    {
        MessageBeep(MB_OK);
    }
    return(lres);
}
// *** IPersistStream
//
HRESULT CISFBand::GetClassID(CLSID *pClassID)
{
    *pClassID = CLSID_ISFBand;
    return S_OK;
}
//
//  This might be a directory inside CSIDL_APPDATA that was created on
//  a Win9x machine.  Win9x doesn't do the special folder signature info,
//  so when it shows up on NT, it's just a boring directory that now points
//  to the wrong place.
//
//  So if we get a bad directory, see if it's one of these corrupted
//  Win9x pidls and if so, try to reconstitute the original CSIDL_APPDATA
//  by searching for "Application Data".
//
void CISFBand::_FixupAppDataDirectory()
{
    TCHAR szDirPath[MAX_PATH];
    //  We use PathFileExists to check for existence because it turns off
    //  hard error boxes if the target is not available (e.g., floppy not
    //  in drive)
    if (SHGetPathFromIDList(_pidl, szDirPath) &&
        !PathFileExists(szDirPath))
    {
        static TCHAR szBSAppData[] = TEXT("\Application Data");
        LPTSTR pszAppData;
        // For every instance of "Application Data", try to graft it
        // into the real CSIDL_APPDATA. If it works, run with it.
        for (pszAppData = szDirPath;
             pszAppData = StrStrI(pszAppData, szBSAppData);
             pszAppData++)
        {
            // Found a candidate.  The thing after "\Application Data"
            // had better be another backslash (in which case we step
            // over it) or the end of the string (in which case we don't).
            TCHAR szPathBuffer[MAX_PATH];
            LPTSTR pszTail = pszAppData + ARRAYSIZE(szBSAppData) - 1;
            // If we did our math right, we should be right after the
            // "a" at the end of "Application Data".
            ASSERT(pszTail[-1] == TEXT('a'));
            if (pszTail[0] == TEXT('\'))
                pszTail++;              // Step over separator
            else if (pszTail[0] == TEXT(''))
                { }                     // at end of string; stay there
            else
                continue;               // we were faked out; keep looking
            if (SHGetSpecialFolderPath(NULL, szPathBuffer, CSIDL_APPDATA, FALSE))
            {
                PathCombine(szPathBuffer, szPathBuffer, pszTail);
                if (PathFileExists(szPathBuffer))
                {
                    LPITEMIDLIST    pidlReal;
                    pidlReal = ILCreateFromPath(szPathBuffer);
                    if (pidlReal)
                    {
                        ILFree(_pidl);
                        _pidl = pidlReal;
                    }
                    ASSERT(_pidl);
                    break;              // found it; stop looking
                }
            }
        }
    }
}
typedef struct tagBANDISFSTREAM {
    WORD        wVersion;   // version of this structure
    WORD        cbSize;     // size of this structure
    DWORD       dwFlags;    // BANDISF_ flags
    DWORD       dwPriv;     // special folder identifier
    WORD        wViewMode;  // small/large/logo
    WORD        wUnused;    // For DWORD alignment
    COLORREF    crBkgnd;    // band background color
    COLORREF    crBtnLt;    // band button hilite color
    COLORREF    crBtnDk;    // band button lolite color
} BANDISFSTREAM, * PBANDISFSTREAM;
#define BANDISF_VERSION 0x22
#define BANDISF_MASK_PSF         0x00000001 // TRUE if _psf is saved
#define BANDISF_BOOL_NOSHOWTEXT  0x00000002 // TRUE if _fNoShowText
#define BANDISF_BOOL_LARGEICON   0x00000004 // last used in version 0x20
#define BANDISF_MASK_PIDLASLINK  0x00000008 // TRUE if _pidl is saved as a link
#define BANDISF_UNUSED10         0x00000010 // (obsolete) was BOOL_NOTITLE
#define BANDISF_BOOL_CHANNELS    0x00000020 // TRUE if in channel mode
#define BANDISF_BOOL_ALLOWRENAME 0x00000040 // TRUE if _psf context menu should be enabled
#define BANDISF_BOOL_DEBOSSED    0x00000080 // TRUE if band should have embossed background
#define BANDISF_MASK_ORDERLIST   0x00000100 // TRUE if an order list is saved
#define BANDISF_BOOL_BKCOLOR     0x00000200 // TRUE if bk color is persisted
#define BANDISF_BOOL_FULLOPEN    0x00000400 // TRUE if band should maximize when opened
#define BANDISF_BOOL_NONAMESORT  0x00000800 // TRUE if band should _not_ sort icons by name
#define BANDISF_BOOL_BTNMINSIZE  0x00001000 // TRUE if band should report min thickness of button
#define BANDISF_BOOL_COLORS      0x00002000 // TRUE if colors are persisted
#define BANDISF_VALIDBITS        0x00003FFF
HRESULT CISFBand::Load(IStream *pstm)
{
    HRESULT hres;
    DWORD cbRead;
    BANDISFSTREAM bisfs = {0};
    // figure out what we need to load
    //
    // read first DWORD only (old stream format started with ONE dword)
    hres = pstm->Read(&bisfs, SIZEOF(DWORD), &cbRead);
    if (SUCCEEDED(hres))
    {
        if (bisfs.cbSize == 0)
        {
            // upgrade case, IE4 beta1 shipped this way
            //
            bisfs.dwFlags = *((LPDWORD)&bisfs);
            bisfs.cbSize = SIZEOF(bisfs);
            bisfs.wVersion = BANDISF_VERSION;
            bisfs.dwPriv = -1;
            bisfs.wViewMode = (bisfs.dwFlags & BANDISF_BOOL_LARGEICON) ? ISFBVIEWMODE_LARGEICONS : ISFBVIEWMODE_SMALLICONS;
        }
        else
        {
            // read rest of stream
            //
            DWORD dw = (DWORD)bisfs.cbSize;
            if (dw > SIZEOF(bisfs))
                dw = SIZEOF(bisfs);
            dw -= SIZEOF(DWORD);
            hres = pstm->Read(&(bisfs.dwFlags), dw, &cbRead);
            if (FAILED(hres))
                return(hres);
        }
        // HEY, DON'T BE LAME ANY MORE.  When you next touch this code,
        // I suggest you figure out what sizes of this structure have
        // been actually shipped and only upgrade those.  Also use
        // the offsetof macro so you don't have to keep calculating these
        // things...
        // old upgrade, I don't know what state is persisted at setup time!
        //
        if (bisfs.cbSize == SIZEOF(bisfs) - 3*SIZEOF(COLORREF) - SIZEOF(DWORD) - SIZEOF(DWORD))
        {
            bisfs.dwPriv = -1;
            bisfs.cbSize += SIZEOF(DWORD);
        }
        // most recent upgrade, this is NOT persisted in registry at setup time!!!
        //
        if (bisfs.cbSize == SIZEOF(bisfs) - 3*SIZEOF(COLORREF) - SIZEOF(DWORD))
        {
            bisfs.wViewMode = (bisfs.dwFlags & BANDISF_BOOL_LARGEICON) ? ISFBVIEWMODE_LARGEICONS : ISFBVIEWMODE_SMALLICONS;
            bisfs.cbSize = SIZEOF(bisfs);
        }
        // upgrade from version 0x21 + crBkgnd only to 0x22
        //
        if (bisfs.cbSize == SIZEOF(bisfs) - 2*SIZEOF(COLORREF))
        {
            bisfs.cbSize = SIZEOF(bisfs);
        }
        // upgrade from version 0x21 to 0x22
        //
        if (bisfs.cbSize == SIZEOF(bisfs) - 3*SIZEOF(COLORREF))
        {
            bisfs.cbSize = SIZEOF(bisfs);
        }
        if (!EVAL(bisfs.cbSize >= SIZEOF(bisfs)))
        {
            return(E_FAIL);
        }
        ASSERT(!(bisfs.dwFlags & ~BANDISF_VALIDBITS));
        if (bisfs.dwFlags & BANDISF_BOOL_NOSHOWTEXT)
            _fNoShowText = TRUE;
        if (bisfs.dwFlags & BANDISF_BOOL_ALLOWRENAME)
            _fAllowRename = TRUE;
        if (bisfs.dwFlags & BANDISF_BOOL_DEBOSSED)
            _fDebossed = TRUE;
        if (bisfs.dwFlags & BANDISF_BOOL_FULLOPEN)
            _fFullOpen = TRUE;
        if (bisfs.dwFlags & BANDISF_BOOL_NONAMESORT)
            _fNoNameSort = TRUE;
        if (bisfs.dwFlags & BANDISF_BOOL_BTNMINSIZE)
            _fBtnMinSize = TRUE;
        if (bisfs.dwFlags & BANDISF_BOOL_BKCOLOR)
        {
            _crBkgnd = bisfs.crBkgnd;
            _fHaveBkColor = TRUE;
        }
        if (bisfs.dwFlags & BANDISF_BOOL_COLORS)
        {
            _crBtnLt = bisfs.crBtnLt;
            _crBtnDk = bisfs.crBtnDk;
            _fHaveColors = TRUE;
        }
        _dwPriv = bisfs.dwPriv;
#if 1 // BUGBUG FEATURE_UASSIST hack this should be persisted not recalc'ed
#define UEMIsLogCsidl(dwPrivID)    ((dwPrivID) == CSIDL_APPDATA)
        if (UEMIsLogCsidl(_dwPriv)) {
            _eUemLog = UEMIND_SHELL;
        }
#endif
        _uIconSize = bisfs.wViewMode;
        _fNoRecalcDefaults = TRUE;
        if (bisfs.dwFlags & BANDISF_MASK_PIDLASLINK)
        {
            ASSERT(NULL==_pidl);
            hres = LoadPidlAsLink(_punkSite, pstm, &_pidl);
            // If we hit hits, LoadPidlAsLink() read a chuck of our data. - BryanSt
            ASSERT(SUCCEEDED(hres));
//            DEBUG_CODE(TCHAR szDbgBuffer[MAX_PATH];)
//            TraceMsg(TF_BAND|TF_GENERAL, "CISFBand::Load() _pidl=>%s<", Dbg_PidlStr(_pidl, szDbgBuffer, SIZECHARS(szDbgBuffer)));
            _FixupAppDataDirectory();
        }
                
        if (SUCCEEDED(hres) && (bisfs.dwFlags & BANDISF_MASK_PSF))
        {
            ASSERT(NULL == _psf);
            hres = OleLoadFromStream(pstm, IID_IShellFolder, (void **)&_psf);
        }
        // map this to working info
        //
        if (SUCCEEDED(hres))
            _AfterLoad();
        // we need _psf before we can read the order list.
        if (SUCCEEDED(hres) && (bisfs.dwFlags & BANDISF_MASK_ORDERLIST))
        {
            hres = OrderList_LoadFromStream(pstm, &_hdpaOrder, _psf);
            if (SUCCEEDED(hres))
            {
                // _fDropped "persists" along with the orderlist - if this flag
                // is set, we assume we have a non-default ordering
                _fDropped = TRUE;
            }
        }
    }
    return hres;
}
HRESULT SaveIsfToStream(IShellFolder *psf, IStream *pstm)
{
    IPersistStream* pps;
    HRESULT hres = psf->QueryInterface(IID_IPersistStream, (void **)&pps);
    if (SUCCEEDED(hres))
    {
        hres = OleSaveToStream(pps, pstm);
        pps->Release();
    }
    return hres;
}
HRESULT CISFBand::Save(IStream *pstm, BOOL fClearDirty)
{
    IPersistStream* pps = NULL;
    HRESULT hres;
    BANDISFSTREAM bisfs = {0};
    // figure out what we will save
    //
    if (_pidl)
        bisfs.dwFlags |= BANDISF_MASK_PIDLASLINK;
    // BUGBUG(lamadio): This case is busted. None of the IShellFolders implement IPersistStream (at least as far as
    // TJ and I can see). Qhen quick links initializes, it will set the pidlQuickLinks as the _pidl. So, in the 
    // After load, _fPSFBandDesktop gets set to TRUE. Why? I don't know. Well, then we never attempt to persist the 
    // IShellFolder and we will never fail the save. We should remove this case so we don't run into this again.
    if (_psf && !_fPSFBandDesktop)
        bisfs.dwFlags |= BANDISF_MASK_PSF;
    if (_fDropped && (_hdpa || _hdpaOrder)) // only if a drop occurred do we have non-default ordering
        bisfs.dwFlags |= BANDISF_MASK_ORDERLIST;
    if (_fNoShowText)
        bisfs.dwFlags |= BANDISF_BOOL_NOSHOWTEXT;
    if (_fAllowRename)
        bisfs.dwFlags |= BANDISF_BOOL_ALLOWRENAME;
    if (_fDebossed)
        bisfs.dwFlags |= BANDISF_BOOL_DEBOSSED;
    if (_fFullOpen)
        bisfs.dwFlags |= BANDISF_BOOL_FULLOPEN;
    if (_fNoNameSort)
        bisfs.dwFlags |= BANDISF_BOOL_NONAMESORT;
    if (_fBtnMinSize)
        bisfs.dwFlags |= BANDISF_BOOL_BTNMINSIZE;
    if (_fHaveBkColor)
    {
        bisfs.dwFlags |= BANDISF_BOOL_BKCOLOR;
        bisfs.crBkgnd = _crBkgnd;
    }
    if (_fHaveColors)
    {
        bisfs.dwFlags |= BANDISF_BOOL_COLORS;
        bisfs.crBtnLt = _crBtnLt;
        bisfs.crBtnDk = _crBtnDk;
    }
    bisfs.cbSize = SIZEOF(bisfs);
    bisfs.wVersion = BANDISF_VERSION;
    bisfs.dwPriv = _dwPriv;
    bisfs.wViewMode = _uIconSize;
    // now save it
    //
    hres = pstm->Write(&bisfs, SIZEOF(bisfs), NULL);
    if (SUCCEEDED(hres) && bisfs.dwFlags & BANDISF_MASK_PIDLASLINK)
    {
        hres = SavePidlAsLink(_punkSite, pstm, _pidl);
        // BUGBUG: We need to save a terminator.
    }
    if (SUCCEEDED(hres) && bisfs.dwFlags & BANDISF_MASK_PSF)
    {
        hres = SaveIsfToStream(_psf, pstm);
    }
    if (SUCCEEDED(hres) && (bisfs.dwFlags & BANDISF_MASK_ORDERLIST))
    {
        hres = OrderList_SaveToStream(pstm, (_hdpa ? _hdpa : _hdpaOrder), _psf);
    }
    return(hres);
}
#if 0
// IPersistPropertyBag implementation
//
HRESULT CISFBand::Load(IPropertyBag *pPropBag, IErrorLog *pErrorLog)
{
    ASSERT(0);  // obsolete!
    _fCascadeFolder = PropBag_ReadInt4(pPropBag, L"Cascade", FALSE);
    // n.b. old "Title" property nuked
    _uIconSize = (PropBag_ReadInt4(pPropBag, L"Large", TRUE) ? ISFBVIEWMODE_LARGEICONS : ISFBVIEWMODE_SMALLICONS);
    _fNoShowText = PropBag_ReadInt4(pPropBag, L"Text", TRUE);
    return(S_OK);
}
HRESULT CISFBand::Save(IPropertyBag *pPropBag, BOOL fClearDirty, BOOL fSaveAllProperties)
{
    return(E_NOTIMPL);
}
HRESULT CISFBand::InitNew()
{
    ASSERT(0);  // obsolete!
    return(E_NOTIMPL);
}
#endif
// IContextMenu implementation
//
HRESULT CISFBand::InvokeCommand(LPCMINVOKECOMMANDINFO lpici)
{
    BOOL fChanged = FALSE;
    int idCmd = -1;
    UINT uNewMode = 0;
    if (!HIWORD(lpici->lpVerb))
        idCmd = LOWORD(lpici->lpVerb);
    switch (idCmd)
    {
    case ISFBIDM_LARGE:
        uNewMode = ISFBVIEWMODE_LARGEICONS;
        goto newViewMode;
    case ISFBIDM_SMALL:
        uNewMode = ISFBVIEWMODE_SMALLICONS;
newViewMode:
        if (uNewMode != _uIconSize)
        {
            BOOL fRefresh = FALSE;
            if (uNewMode == ISFBVIEWMODE_LOGOS || _uIconSize == ISFBVIEWMODE_LOGOS)
            {
                // invalidate all before switching the imagelist...
                _RememberOrder();
                EmptyToolbar();
                fRefresh = TRUE;
            }
            // we Logo view has now left the building...
            if ( uNewMode != ISFBVIEWMODE_LOGOS && _uIconSize == ISFBVIEWMODE_LOGOS )
            {
                ExitLogoView();
            }
            fChanged = _UpdateIconSize(uNewMode, TRUE);
            if ( fRefresh )
            {
                _FillToolbar();
            }
            if (fChanged)
                _BandInfoChanged();
        }
        // fall thru
    default:
        return CSFToolbar::InvokeCommand(lpici);
    }
    return(S_OK);
}
// *** IOleCommandTarget methods ***
STDMETHODIMP CISFBand::QueryStatus(const GUID *pguidCmdGroup,
        ULONG cCmds, OLECMD rgCmds[], OLECMDTEXT *pcmdtext)
{
    HRESULT hr = OLECMDERR_E_UNKNOWNGROUP;
    if (pguidCmdGroup == NULL)
    {
        // nothing
    }
    else if (IsEqualGUID(CGID_ISFBand, *pguidCmdGroup))
    {
        for (UINT i = 0; i < cCmds; i++)
        {
            switch (rgCmds[i].cmdID)
            {
            case ISFBID_CACHEPOPUP:
            case ISFBID_ISITEMVISIBLE:
            case ISFBID_PRIVATEID:
                rgCmds[i].cmdf |= OLECMDF_SUPPORTED;
                break;
            }
        }
        hr = S_OK;
    }
    else if (IsEqualGUID(CGID_ShellDocView, *pguidCmdGroup))
    {
        for (UINT i = 0; i < cCmds; i++)
        {
            switch (rgCmds[i].cmdID)
            {
            case SHDVID_UEMLOG:
                rgCmds[i].cmdf |= OLECMDF_SUPPORTED;
                break;
            }
        }
        hr = S_OK;
    }
    return hr;
}
HRESULT CISFBand::_IsPidlVisible(LPITEMIDLIST pidl)
{
    int i;
    if (_GetButtonFromPidl(pidl, NULL, &i)) {
        RECT rc;
        GetClientRect(_hwndTB, &rc);
        if (SHIsButtonObscured(_hwndTB, &rc, i))
            return S_FALSE;
        else
            return S_OK;
    }
    return E_FAIL;
}
HRESULT CISFBand::_OrderListFromIStream(VARIANT* pvarargIn)
{
    HRESULT hres = E_FAIL;
    if (pvarargIn->vt == VT_UNKNOWN)
    {
        IStream* pstm;
        if (SUCCEEDED(pvarargIn->punkVal->QueryInterface(IID_IStream, (void**)&pstm)))
        {
            OrderList_Destroy(&_hdpaOrder);
            hres = OrderList_LoadFromStream(pstm, &_hdpaOrder, _psf);
            if (SUCCEEDED(hres))
            {
                _SetDirty(TRUE);
                if (_fShow)
                {
                    _FillToolbar();
                }
            }
            pstm->Release();
        }
    }
    return hres;
}
HRESULT CISFBand::_IStreamFromOrderList(VARIANT* pvarargOut)
{
    HRESULT hres = E_OUTOFMEMORY;
    ASSERT(pvarargOut != NULL);
    IStream* pstm = SHCreateMemStream(NULL, 0);
    if (pstm)
    {
        hres = OrderList_SaveToStream(pstm, _hdpa, _psf);
        if (SUCCEEDED(hres))
        {
            pvarargOut->vt = VT_UNKNOWN;
            pvarargOut->punkVal = pstm;
            pvarargOut->punkVal->AddRef();
        }
        pstm->Release();
    }
    return hres;
}
STDMETHODIMP CISFBand::Exec(const GUID *pguidCmdGroup, DWORD nCmdID,
    DWORD nCmdexecopt, VARIANTARG *pvarargIn, VARIANTARG *pvarargOut)
{
    if (pguidCmdGroup == NULL)
    {
        // nothing
    }
    else if (IsEqualGUID(CGID_ISFBand, *pguidCmdGroup))
    {
        switch (nCmdID)
        {
        case ISFBID_CACHEPOPUP:
            if (pvarargIn && pvarargIn->vt == VT_UNKNOWN)
            {
                IMenuPopup* pmp = NULL;
                if (pvarargIn->punkVal)
                    pvarargIn->punkVal->QueryInterface(IID_IMenuPopup, (void **)&pmp);
                _SetCacheMenuPopup(pmp);
                ATOMICRELEASE(pmp);
            }
            if (pvarargOut)
            {
                pvarargOut->vt = VT_UNKNOWN;
                pvarargOut->punkVal = _pmpCache;
                if (_pmpCache)
                    _pmpCache->AddRef();
            }
            return S_OK;
        case ISFBID_ISITEMVISIBLE:
            {
                HRESULT hr = E_INVALIDARG;
                if (pvarargIn && pvarargIn->vt == VT_INT_PTR)
                    hr = _IsPidlVisible((LPITEMIDLIST)pvarargIn->byref);
                return hr;
            }
        case ISFBID_PRIVATEID:
            // hack hack for BSMenu to differentiate between specially created
            // isfbands. see bsmenu's _FindBand
            // if pvarargOut is set, we give back the id we have stored.
            if (pvarargOut)
            {
                pvarargOut->vt = VT_I4;
                pvarargOut->lVal = _dwPriv;
            }
            // if pvarargIn is set, then we take and keep this id.
            if (pvarargIn && pvarargIn->vt == VT_I4)
                _dwPriv = pvarargIn->lVal;
            return S_OK;
        case ISFBID_GETORDERSTREAM:
            return _IStreamFromOrderList(pvarargOut);
        case ISFBID_SETORDERSTREAM:
            return _OrderListFromIStream(pvarargIn);
        }
    }
    else if (IsEqualGUID(CGID_ShellDocView, *pguidCmdGroup))
    {
        switch (nCmdID)
        {
        case SHDVID_UEMLOG:
            ASSERT(pvarargOut == NULL);
            // if pvarargIn is set, then we take and keep this id.
            if (pvarargIn && pvarargIn->vt == VT_I4)
            {
                _eUemLog = pvarargIn->lVal;
                ASSERT(_eUemLog == UEMIND_SHELL || _eUemLog == UEMIND_BROWSER);
            }
            return S_OK;
        }
    }
    else if (IsEqualGUID(CGID_DeskBand, *pguidCmdGroup))
    {
        switch (nCmdID)
        {
        case DBID_DELAYINIT:
            _fDelayInit = TRUE;
            break;
        case DBID_FINISHINIT:
            _fDelayInit = FALSE;
            _RegisterToolbar();
            break;
        }
        return S_OK;
    }
    
    return OLECMDERR_E_NOTSUPPORTED;
}
IShellFolder * CISFBand::GetSF()
{
    ASSERT( _psf );
    return _psf;
}
HWND CISFBand::GetHWND()
{
    return _hwndTB;
}
REFTASKOWNERID CISFBand::GetTOID()
{
    return TOID_ExtractImage;
}
HRESULT CISFBand::OnTranslatedChange(LONG lEvent, LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
{
    if (lEvent == SHCNE_RMDIR && _IsEqualID(pidl1))
    {
        HRESULT hres = E_FAIL;
        IBandSite *pbandSite;
        if (_punkSite)
        {
            hres = _punkSite->QueryInterface(IID_IBandSite, (void **)&pbandSite);
            if (EVAL(SUCCEEDED(hres))) 
            {
                pbandSite->RemoveBand(_dwBandID);
                pbandSite->Release();
            }
        }
        return hres;
    }
    else
    {
        return CSFToolbar::OnTranslatedChange(lEvent, pidl1, pidl2);
    }
}
HRESULT CISFBand::UpdateLogoCallback( DWORD dwItem, int iIcon, HBITMAP hImage, LPCWSTR pszCache, BOOL fCache )
{
    int iItem = (int)dwItem;
    HRESULT hr;
    UINT uImage;
    // catch if we are closing...
    if ( _fClosing )
        return NOERROR;
    IMAGECACHEINFO rgInfo;
    rgInfo.dwMask = ICIFLAG_NAME | ICIFLAG_LARGE | ICIFLAG_BITMAP | ICIFLAG_NOUSAGE;
    rgInfo.cbSize = sizeof( rgInfo );
    rgInfo.pszName = pszCache;
    rgInfo.hBitmapLarge = hImage;
    ASSERT(_pLogoCache);
    if (_pLogoCache)
        hr = _pLogoCache->AddImage( &rgInfo, &uImage );
    else
        hr = E_FAIL;
    // catch if we are closing...
    if ( _fClosing )
        return NOERROR;
    if ( SUCCEEDED( hr ))
    {
        // remember the icon to logo mapping....
        AddIndicesToLogoList( iIcon, uImage );
        // catch we are closing before we try and doa bloc
        PostMessage( _hwndTB, TB_CHANGEBITMAP, iItem, uImage );
    }
    // stop delay painting when the last extract image task calls back
    if (_fDelayPainting) {
        if (_pTaskScheduler && _pTaskScheduler->CountTasks(TOID_NULL) == 1) {
            _StopDelayPainting();
        }
    }
    return hr;
}
// }
HRESULT CISFBand::_GetTitleW(LPWSTR pwszTitle, DWORD cchSize)
{
    HRESULT hr = E_FAIL;
    TraceMsg(TF_BAND, "Calling baseclass CISFBand::_GetTitleW");
    if (!EVAL(pwszTitle))
        return E_INVALIDARG;
    *pwszTitle = 0;
    if (_pidl)
    {
        hr = SHGetNameAndFlagsW(_pidl, SHGDN_NORMAL, pwszTitle, cchSize, NULL);
    }
    else if (_psf && !_fPSFBandDesktop)
    {
#ifdef BUSTED
        // BUGBUG (scotth):  We cannot call GetDisplayNameOf with NULL pidl.
        //                   We must change this code so _pidl is always
        //                   valid, and key off a flag to determine whether
        //                   to receive notifies.  Remove this code once
        //                   that is done.
        STRRET strret;
        if (SUCCEEDED(_psf->GetDisplayNameOf(NULL, SHGDN_NORMAL, &strret)))
            StrRetToBufW(&strret, NULL, pwszTitle, cchSize);
#endif
    }
    return hr;
}
STDAPI NavigateToPIDL(IWebBrowser2* pwb, LPCITEMIDLIST pidl);
HRESULT FakeGetNavigateTarget(IShellFolder *psf, LPCITEMIDLIST pidl, LPITEMIDLIST *ppidl);
LRESULT CISFBand::_TryChannelSurfing(LPCITEMIDLIST pidl)
{
    LRESULT lRet = 0;
    ASSERT(_fChannels);
    LPITEMIDLIST pidlTarget;
    HRESULT hr = SHGetNavigateTarget(_psf, pidl, &pidlTarget, NULL);
    // channel category folders hack.
    if (FAILED(hr))
        hr = FakeGetNavigateTarget(_psf, pidl, &pidlTarget);
    if (SUCCEEDED(hr))
    {
        IWebBrowser2* pwb;
        // n.b. careful! only one of GCB and C_OB up the refcnt
        _GetChannelBrowser(&pwb);
        if (SUCCEEDED(Channels_OpenBrowser(&pwb, pwb != NULL)))
        {
            VARIANT flags;
            VARIANT varURLpidl;
            lRet = 1;   // success at this point
            if (SUCCEEDED(NavigateToPIDL(pwb, pidlTarget)))
            {
                LPITEMIDLIST pidlFull = ILCombine(_pidl, pidl);
                if (pidlFull)
                {
                    flags.vt = VT_I4;
                    flags.lVal = navBrowserBar;
                    if (InitVariantFromIDList(&varURLpidl, pidlFull))
                    {
                        pwb->Navigate2(&varURLpidl, &flags, PVAREMPTY, PVAREMPTY, PVAREMPTY);
                        VariantClear(&varURLpidl);
                    }
                    ILFree(pidlFull);
                }
            }
        }
        if (pwb)
            pwb->Release();
        ILFree(pidlTarget);
    }
    return lRet;
}
//***   _GetChannelBrowser -- find appropriate browser for surfing
// DESCRIPTION
//  for the DTBrowser case, we fail (pwb=NULL, hr=S_FALSE) so that our
// caller will create a new SHBrowser (which can be put into theater mode).
// for the SHBrowser case, we find the top-level browser (so we'll navigate
// in-place).
HRESULT CISFBand::_GetChannelBrowser(IWebBrowser2 **ppwb)
{
    HRESULT hr;
    IServiceProvider *psp;
    *ppwb = NULL;   // assume failure
    if (_fDesktop) {
        ASSERT(*ppwb == NULL);
        hr = S_FALSE;
    }
    else {
        hr = IUnknown_QueryService(_punkSite, SID_STopLevelBrowser, IID_IServiceProvider, (void**)&psp);
        ASSERT(SUCCEEDED(hr));
        if (SUCCEEDED(hr)) {
            hr = psp->QueryService(SID_SWebBrowserApp, IID_IWebBrowser2, (void **)ppwb);
            ASSERT(SUCCEEDED(hr));
            psp->Release();
        }
    }
    return hr;
}
HRESULT IUnknown_SetBandInfoSFB(IUnknown *punkBand, BANDINFOSFB *pbi)
{
    HRESULT hr = E_FAIL;
    IShellFolderBand *pisfBand;
    if (punkBand) {
        hr = punkBand->QueryInterface(IID_IShellFolderBand, (void **)&pisfBand);
        if (EVAL(SUCCEEDED(hr))) {
            hr = pisfBand->SetBandInfoSFB(pbi);
            pisfBand->Release();
        }
    }
    return hr;
}
///////////////////////////////////////////////////////////////////////////////////////////
///////////////////////////CExtractImageTask///////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////////
// Warning
//
// The CLogoBase class cannot have a ref on the returned task
// since that would be a circular reference
//
// Warning
HRESULT CExtractImageTask_Create( CLogoBase *plb,
                                  LPEXTRACTIMAGE pExtract,
                                  LPCWSTR pszCache,
                                  DWORD dwItem,
                                  int iIcon,
                                  DWORD dwFlags,
                                  LPRUNNABLETASK * ppTask )
{
    if ( !ppTask || !plb || !pExtract )
    {
        return E_INVALIDARG;
    }
    HRESULT hr = NOERROR;
    CExtractImageTask * pNewTask = new CExtractImageTask( &hr,
                                                          plb,
                                                          pExtract,
                                                          pszCache,
                                                          dwItem,
                                                          iIcon,
                                                          dwFlags );
    if ( !pNewTask )
    {
        return E_OUTOFMEMORY;
    }
    if ( FAILED( hr ))
    {
        pNewTask->Release();
        return hr;
    }
    *ppTask = SAFECAST( pNewTask, IRunnableTask *);
    return NOERROR;
}
/////////////////////////////////////////////////////////////////////////////////////////////////////
CExtractImageTask::CExtractImageTask( HRESULT * pHr, CLogoBase *plb, IExtractImage * pImage,
    LPCWSTR pszCache, DWORD dwItem, int iIcon, DWORD dwFlags )
{
    m_lState = IRTIR_TASK_NOT_RUNNING;
    m_plb = plb;
    m_plb->AddRef();
    // cannot assume the band will kill us before it dies....
    // hence we hold a reference
    StrCpyW( m_szPath, pszCache );
    m_pExtract = pImage;
    pImage->AddRef();
    m_cRef = 1;
    // use the upper bit of the flags to determine if we should always call....
    m_dwFlags = dwFlags;
    m_dwItem = dwItem;
    m_iIcon = iIcon;
    // Since the task moves from thread to thread,
    // don't charge this thread for the objects we're using
    remove_from_memlist(m_pExtract);
    remove_from_memlist(this);
}
/////////////////////////////////////////////////////////////////////////////////////////////////////
CExtractImageTask::~CExtractImageTask()
{
    ATOMICRELEASE( m_pExtract );
    ATOMICRELEASE( m_pTask );
    if ( m_hBmp && !( m_dwFlags & EITF_SAVEBITMAP ))
    {
        DeleteObject( m_hBmp );
    }
    if(m_plb)
        m_plb->Release();
}
//////////////////////////////////////////////////////////////////////////////////////////
STDMETHODIMP CExtractImageTask::QueryInterface( REFIID riid, void **ppvObj )
{
    if ( !ppvObj )
    {
        return E_INVALIDARG;
    }
    if ( IsEqualIID( riid, IID_IUnknown ))
    {
        *ppvObj = SAFECAST( this, IUnknown *);
    }
    else if ( IsEqualIID( riid, IID_IRunnableTask ))
    {
        *ppvObj = SAFECAST( this, IRunnableTask *);
    }
    else
    {
        return E_NOINTERFACE;
    }
    AddRef();
    return NOERROR;
}
//////////////////////////////////////////////////////////////////////////////////////////
STDMETHODIMP_ (ULONG)  CExtractImageTask::AddRef()
{
    InterlockedIncrement( &m_cRef );
    return m_cRef;
}
//////////////////////////////////////////////////////////////////////////////////////////
STDMETHODIMP_ (ULONG) CExtractImageTask::Release()
{
    if (InterlockedDecrement( &m_cRef ) == 0 )
    {
        delete this;
        return 0;
    }
    return m_cRef;
}
//////////////////////////////////////////////////////////////////////////////////////////
STDMETHODIMP CExtractImageTask::Run ( void )
{
    HRESULT hr = E_FAIL;
    if ( m_lState == IRTIR_TASK_RUNNING )
    {
        hr = S_FALSE;
    }
    else if ( m_lState == IRTIR_TASK_PENDING )
    {
        hr = E_FAIL;
    }
    else if ( m_lState == IRTIR_TASK_NOT_RUNNING )
    {
        LONG lRes = InterlockedExchange( & m_lState, IRTIR_TASK_RUNNING);
        if ( lRes == IRTIR_TASK_PENDING )
        {
            m_lState = IRTIR_TASK_FINISHED;
            return NOERROR;
        }
        // see if it supports IRunnableTask
        m_pExtract->QueryInterface( IID_IRunnableTask, (void **) & m_pTask );
#ifdef UNIX
        //Hey Guys : IE4.01 has an error - it returns the wrong VTABLE
        //when this QI is done. We know how our VTABLEs are laid out
#else
        // IE4.01 has an error - it returns the wrong VTABLE
        // when this QI is done.
        if((LPVOID)m_pTask == (LPVOID)m_pExtract)
        {
            m_pTask = m_pTask + 2; // This vtable is two ptrs away and is in fstree.cpp in shell32 in IE4.01
        }
#endif
        if ( m_lState == IRTIR_TASK_RUNNING )
        {
            // start the extractor....
            hr = m_pExtract->Extract( &m_hBmp );
        }
        if (( SUCCEEDED( hr ) || ( hr != E_PENDING && (m_dwFlags & EITF_ALWAYSCALL))) && m_lState == IRTIR_TASK_RUNNING )
        {
            hr = InternalResume();
        }
        if ( m_lState != IRTIR_TASK_SUSPENDED || hr != E_PENDING )
        {
            m_lState = IRTIR_TASK_FINISHED;
        }
    }
    return hr;
}
/////////////////////////////////////////////////////////////////////////////////////////////////////
STDMETHODIMP CExtractImageTask::Kill ( BOOL fWait )
{
    if ( m_lState != IRTIR_TASK_RUNNING )
    {
        return S_FALSE;
    }
    LONG lRes = InterlockedExchange( &m_lState, IRTIR_TASK_PENDING );
    if ( lRes == IRTIR_TASK_FINISHED )
    {
        m_lState = lRes;
        return NOERROR;
    }
    // does it support IRunnableTask ? Can we kill it ?
    HRESULT hr = E_NOTIMPL;
    if ( m_pTask != NULL )
    {
        hr = m_pTask->Kill( FALSE );
    }
    return hr;
}
///////////////////////////////////////////////////////////////////////////////////////
STDMETHODIMP CExtractImageTask::Suspend( void )
{
    if ( !m_pTask )
    {
        return E_NOTIMPL;
    }
    if ( m_lState != IRTIR_TASK_RUNNING )
    {
        return E_FAIL;
    }
    LONG lRes = InterlockedExchange( &m_lState, IRTIR_TASK_SUSPENDED );
    HRESULT hr = m_pTask->Suspend();
    if ( SUCCEEDED( hr ))
    {
        lRes = (LONG) m_pTask->IsRunning();
        if ( lRes == IRTIR_TASK_SUSPENDED )
        {
            m_lState = lRes;
        }
    }
    else
    {
        m_lState = lRes;
    }
    return hr;
}
////////////////////////////////////////////////////////////////////////////////////////
STDMETHODIMP CExtractImageTask::Resume( void )
{
    if ( !m_pTask )
    {
        return E_NOTIMPL;
    }
    if ( m_lState != IRTIR_TASK_SUSPENDED )
    {
        return E_FAIL;
    }
    m_lState = IRTIR_TASK_RUNNING;
    HRESULT hr = m_pTask->Resume();
    if ( SUCCEEDED( hr ) || ( hr != E_PENDING && ( m_dwFlags & EITF_ALWAYSCALL )))
    {
        hr = InternalResume();
    }
    return hr;
}
/////////////////////////////////////////////////////////////////////////////////////////////////////
HRESULT CExtractImageTask::InternalResume()
{
    HRESULT hr = NOERROR;
    if ( m_dwFlags & EITF_ALWAYSCALL || m_hBmp )
    {
        // call the update function
        hr = m_plb->UpdateLogoCallback( m_dwItem, m_iIcon, m_hBmp, m_szPath, TRUE );
    }
    m_lState = IRTIR_TASK_FINISHED;
    return hr;
}
/////////////////////////////////////////////////////////////////////////////////////////////////////
STDMETHODIMP_( ULONG ) CExtractImageTask:: IsRunning ( void )
{
    return m_lState;
}
////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////CLogoBase/////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////
// static data...
IImageCache * CLogoBase::s_pSharedWideLogoCache = NULL;
long CLogoBase::s_lSharedWideLogosRef = 0;
HDSA CLogoBase::s_hdsaWideLogoIndices = NULL;
CRITICAL_SECTION CLogoBase::s_csSharedLogos = {0};
extern "C" void CLogoBase_Initialize( void )
{
    CLogoBase::_Initialize();
}
extern "C" void CLogoBase_Cleanup( void )
{
    CLogoBase::_Cleanup( );
}
void CLogoBase::_Initialize( void )
{
    InitializeCriticalSection( &s_csSharedLogos );
}
void CLogoBase::_Cleanup( void )
{
    DeleteCriticalSection( & s_csSharedLogos );
}
CLogoBase::CLogoBase( BOOL fWide )
{
    // are we paletized, then use the global halftone palette ....
    HDC hdcTmp = GetDC( NULL );
    if (hdcTmp)
    {
        if (GetDeviceCaps( hdcTmp, RASTERCAPS) & RC_PALETTE)
        {
            ASSERT( g_hpalHalftone );
            _hpalHalftone = g_hpalHalftone;
        }
        ReleaseDC( NULL, hdcTmp );
    }
    _fWide = fWide;
}
CLogoBase::~CLogoBase()
{
    if (_pLogoCache || _pTaskScheduler)
    {
        ExitLogoView();
    }
    // NOTE: no palette release because we are using the global Halftone palette......
}
HRESULT CLogoBase::AddRefLogoCache( void )
{
    if ( _fWide )
    {
        EnterCriticalSection( &s_csSharedLogos );
        if ( !s_lSharedWideLogosRef )
        {
            if ( !s_hdsaWideLogoIndices )
            {
                s_hdsaWideLogoIndices = DSA_Create( sizeof( LogoIndex ), 5 );
                if ( !s_hdsaWideLogoIndices )
                {
                    LeaveCriticalSection( &s_csSharedLogos );
                    return E_OUTOFMEMORY;
                }
            }
            ASSERT( s_hdsaWideLogoIndices );
            ASSERT( !s_pSharedWideLogoCache );
            // BUGBUG for now CoCreate one per view
            HRESULT hr = CoCreateInstance( CLSID_ImageListCache,
                                           NULL,
                                           CLSCTX_INPROC,
                                           IID_IImageCache,
                                           (void **) & s_pSharedWideLogoCache );
            if ( FAILED( hr ))
            {
                LeaveCriticalSection( &s_csSharedLogos );
                return hr;
            }
        }
        ASSERT( s_pSharedWideLogoCache );
        // bump up the ref and get a pointer to it...
        s_lSharedWideLogosRef ++;
        _pLogoCache = s_pSharedWideLogoCache;
        _pLogoCache->AddRef();
        _hdsaLogoIndices = s_hdsaWideLogoIndices;
        LeaveCriticalSection( &s_csSharedLogos );
        return NOERROR;
    }
    else
    {
        // non wide logo version we don't share because w eonly expect there ever to be one...
        _hdsaLogoIndices = DSA_Create( sizeof( LogoIndex ), 5 );
        if ( !_hdsaLogoIndices )
        {
            return E_OUTOFMEMORY;
        }
        // BUGBUG for now CoCreate one per view
        return CoCreateInstance( CLSID_ImageListCache,
                                 NULL,
                                 CLSCTX_INPROC,
                                 IID_IImageCache,
                                 (void **) & _pLogoCache );
    }
}
HRESULT CLogoBase::ReleaseLogoCache( void )
{
    if ( !_pLogoCache )
    {
        return S_FALSE;
    }
    ATOMICRELEASE(_pLogoCache);
    if ( _fWide )
    {
        EnterCriticalSection( &s_csSharedLogos );
        ASSERT( s_lSharedWideLogosRef > 0 );
        s_lSharedWideLogosRef --;
        if ( ! s_lSharedWideLogosRef )
        {
            // let go of the final ref.....
            ATOMICRELEASE(s_pSharedWideLogoCache);
            ASSERT( s_hdsaWideLogoIndices );
            DSA_Destroy( s_hdsaWideLogoIndices );
            s_hdsaWideLogoIndices = NULL;
        }
        LeaveCriticalSection( &s_csSharedLogos );
    }
    else
    {
        // free the HDSA
        DSA_Destroy( _hdsaLogoIndices );
    }
    return NOERROR;
}
HRESULT CLogoBase::InitLogoView( void )
{
    HRESULT hr = AddRefLogoCache();
    if (SUCCEEDED(hr))
    {
        hr = CoCreateInstance(CLSID_ShellTaskScheduler,
                              NULL,
                              CLSCTX_INPROC,
                              IID_IShellTaskScheduler,
                              (void **) &_pTaskScheduler);
        if (FAILED(hr))
        {
            ATOMICRELEASE(_pLogoCache);
        }
        else
        {
            _rgLogoSize.cx = ( _fWide ) ? LOGO_WIDE_WIDTH : LOGO_WIDTH ;
            _rgLogoSize.cy = LOGO_HEIGHT;
            IMAGECACHEINITINFO rgInfo;
            rgInfo.cbSize = sizeof( rgInfo );
            rgInfo.dwMask = ICIIFLAG_LARGE;
            rgInfo.iStart = 0;
            rgInfo.iGrow = 5;
            // the color depth is currently the screen resolution...
            int iColorRes = SHGetCurColorRes();
            _dwClrDepth = (DWORD) iColorRes;
            switch (iColorRes)
            {
                case 16 :   rgInfo.dwFlags = ILC_COLOR16;
                            break;
                case 24 :
                case 32 :   rgInfo.dwFlags = ILC_COLOR24;
                            break;
                default :   rgInfo.dwFlags = ILC_COLOR8;
            }
            rgInfo.rgSizeLarge = _rgLogoSize;
            if (_pLogoCache)
                hr = _pLogoCache->GetImageList(&rgInfo);
            else
                hr = E_UNEXPECTED;
            if (FAILED(hr))
            {
                ATOMICRELEASE(_pLogoCache);
                ATOMICRELEASE(_pTaskScheduler);
            }
            else
            {
                _himlLogos = rgInfo.himlLarge;
                // GetImageList() will return S_FALSE if it was already created...
                if ((hr == S_OK) && (iColorRes <= 8))
                {
                    // init the color table so that it matches The "special halftone palette"
                    HPALETTE hpal = SHCreateShellPalette(NULL);
                    PALETTEENTRY rgColours[256];
                    RGBQUAD rgDIBColours[256];
                    ASSERT( hpal );
                    int nColours = GetPaletteEntries(hpal, 0, ARRAYSIZE(rgColours), rgColours);
                    // SHGetShellPalette should always return a 256 colour palette
                    ASSERT(nColours == ARRAYSIZE(rgColours));
                    // translate from the LOGPALETTE structure to the RGBQUAD structure ...
                    for (int iColour = 0; iColour < nColours; iColour ++)
                    {
                        rgDIBColours[iColour].rgbRed = rgColours[iColour].peRed;
                        rgDIBColours[iColour].rgbBlue = rgColours[iColour].peBlue;
                        rgDIBColours[iColour].rgbGreen = rgColours[iColour].peGreen;
                        rgDIBColours[iColour].rgbReserved = 0;
                    }
                    DeletePalette(hpal);
                    ImageList_SetColorTable(_himlLogos, 0, 256, rgDIBColours);
                }
            }
        }
    }
    return hr;
}
HRESULT CLogoBase::ExitLogoView( void )
{
    ATOMICRELEASE( _pTaskScheduler );
    // the task scheduler callbacks can reference
    // the logocache, so make sure you free the
    // logo cache AFTER the task scheduler!
    ReleaseLogoCache();
    return NOERROR;
}
int CLogoBase::GetCachedLogoIndex( DWORD dwItem, LPCITEMIDLIST pidl, LPRUNNABLETASK *ppTask, DWORD * pdwPriority, DWORD *pdwFlags )
{
    DWORD dwPassedFlags = 0;
    if ( pdwFlags )
    {
        dwPassedFlags = *pdwFlags;
        *pdwFlags = 0;
    }
    // No logo cache?
    if (!_pLogoCache)
        return 0;
    ASSERT( pidl );
    // HACK: this is used on browser only mode to tell what sort of logos we need...
    UINT rgfFlags = _fWide;
    LPEXTRACTIMAGE pImage = NULL;
    int iImage = -1;
    HRESULT hr = E_FAIL;
    // IID_IEXtractLogo and IID_IExtractImage are the same interface, by using a new guid
    // it means we can selectively decided what can logo in logo view...
    hr = FakeGetUIObjectOf( GetSF(), pidl, &rgfFlags, IID_IExtractLogo, (void **) &pImage );
    if ( SUCCEEDED( hr ))
    {
        // extract ....
        HBITMAP hImage;
        WCHAR szPath[MAX_PATH];
        DWORD dwFlags = IEIFLAG_ASYNC | IEIFLAG_ASPECT | dwPassedFlags;
        IMAGECACHEINFO rgInfo;
        UINT uIndex;
        BOOL fAsync;
        DWORD dwPriority;
        rgInfo.cbSize = sizeof( rgInfo );
        hr = pImage->GetLocation( szPath, MAX_PATH, &dwPriority, &_rgLogoSize, _dwClrDepth, &dwFlags );
        fAsync = ( hr == E_PENDING );
        if ( SUCCEEDED( hr ) || fAsync )
        {
            // mask off the flags passed to use by the flags returned from the extractor...
            if ( pdwFlags )
                *pdwFlags = dwPassedFlags & dwFlags;
            rgInfo.dwMask = ICIFLAG_NAME;
            rgInfo.pszName = szPath;
            hr = _pLogoCache->FindImage( &rgInfo, &uIndex );
            if ( hr == S_OK )
            {
                ATOMICRELEASE( pImage );
                return (int) uIndex;
            }
            if ( fAsync )
            {
                LPRUNNABLETASK pTaskTmp = NULL;
                ASSERT( _pTaskScheduler );
                // pass the icon index so we can find the right logo later...
                int iIcon = SHMapPIDLToSystemImageListIndex(GetSF(), pidl, NULL);
                hr = CExtractImageTask_Create( this,
                                               pImage,
                                               szPath,
                                               dwItem,
                                               iIcon,
                                               0,
                                               &pTaskTmp );
                if ( SUCCEEDED( hr ))
                {
                    if ( !ppTask )
                    {
                        hr = AddTaskToQueue( pTaskTmp, dwPriority, dwItem );
                        pTaskTmp->Release();
                    }
                    else
                    {
                        * ppTask = pTaskTmp;
                        ASSERT( pdwPriority );
                        *pdwPriority = dwPriority;
                    }
                }
                else if ( ppTask )
                {
                    *ppTask = NULL;
                }
                // if all this failed, then we will just end up with a default
                // logo. This is only likely to fail in low memory conditions,
                // so that will be fine.
                // if this SUCCEEDED we will drop through to pick up a defualt piccy for now.
            }
            else
            {
                // otherwise extract synchronously.......
                hr = pImage->Extract( &hImage );
                if ( SUCCEEDED( hr ))
                {
                    rgInfo.dwMask = ICIFLAG_NAME | ICIFLAG_LARGE | ICIFLAG_BITMAP | ICIFLAG_NOUSAGE;
                    rgInfo.hBitmapLarge = hImage;
                    hr = _pLogoCache->AddImage( &rgInfo, &uIndex );
                    DeleteObject( hImage );
                }
                if ( SUCCEEDED( hr ))
                {
                    iImage = (int ) uIndex;
                }
            }
        }
    }
    ATOMICRELEASE( pImage );
    return iImage;
}
int CLogoBase::GetLogoIndex( DWORD dwItem, LPCITEMIDLIST pidl, LPRUNNABLETASK *ppTask, DWORD * pdwPriority, DWORD *pdwFlags )
{
    int iImage = GetCachedLogoIndex(dwItem, pidl, ppTask, pdwPriority, pdwFlags );
    if ( iImage == -1 )
    {
        // always pass FALSE, we want the proper ICON, cdfview no longer hits the
        // wire for the icon so we can safely ask for the correct icon.
        iImage = GetDefaultLogo( pidl, FALSE);
    }
    return iImage;
}
HRESULT CLogoBase::AddTaskToQueue( LPRUNNABLETASK pTask, DWORD dwPriority, DWORD dwItem )
{
    ASSERT( _pTaskScheduler );
    return _pTaskScheduler->AddTask( pTask, GetTOID(), dwItem, dwPriority );
}
int CLogoBase::GetDefaultLogo( LPCITEMIDLIST pidl, BOOL fQuick )
{
    USES_CONVERSION;
    // Get icon to draw from
    int iIndex = -1;
    if ( !fQuick )
    {
        iIndex = SHMapPIDLToSystemImageListIndex(GetSF(), pidl, NULL);
    }
    if (iIndex < 0)
    {
        iIndex = II_DOCNOASSOC;
    }
    WCHAR wszText[MAX_PATH];
    wszText[0] = 0;
    STRRET strret;
    HRESULT hr = GetSF()->GetDisplayNameOf( pidl, SHGDN_NORMAL, &strret );
    if ( SUCCEEDED( hr ))
    {
        StrRetToBufW(&strret, pidl, wszText, ARRAYSIZE(wszText));
    }
    UINT uCacheIndex = (UINT) -1;
    if (_pLogoCache)    // We didn't have one in stress.
    {
        IMAGECACHEINFO rgInfo;
        rgInfo.cbSize = sizeof( rgInfo );
        rgInfo.dwMask = ICIFLAG_NAME | ICIFLAG_INDEX;
        rgInfo.pszName = wszText;
        rgInfo.iIndex = iIndex;
        hr = _pLogoCache->FindImage( &rgInfo, &uCacheIndex );
        if ( hr == S_OK )
        {
            return uCacheIndex;
        }
        HBITMAP hDef;
        hr = CreateDefaultLogo( iIndex, _rgLogoSize.cx, _rgLogoSize.cy, W2T(wszText), &hDef );
        if ( SUCCEEDED( hr ))
        {
            rgInfo.hBitmapLarge = hDef;
            rgInfo.hMaskLarge = NULL;
            rgInfo.dwMask = ICIFLAG_NAME | ICIFLAG_INDEX | ICIFLAG_BITMAP | ICIFLAG_LARGE;
            hr = _pLogoCache->AddImage( &rgInfo, &uCacheIndex );
            if ( FAILED(hr ))
            {
                uCacheIndex = (UINT) -1;
            }
            else
            {
                // remember the index of the logo
                AddIndicesToLogoList( iIndex, uCacheIndex );
            }
            DeleteObject( hDef );
        }
    }
    return (int) uCacheIndex;
}
#define DXFUDGE     4
#define COLORTEXT   RGB(255,255,255)
#define COLORBK     RGB(0,0,0)
HRESULT CLogoBase::CreateDefaultLogo(int iIcon, int cxLogo, int cyLogo, LPCTSTR pszText, HBITMAP * phBmpLogo)
{
    HRESULT hr = E_OUTOFMEMORY;
    HBITMAP hbmp = NULL;
    HIMAGELIST himl;
    int cxIcon, cyIcon;
   int x, y, dx, dy;
    // get the small icons....
    Shell_GetImageLists(NULL, &himl);
    ImageList_GetIconSize(himl, &cxIcon, &cyIcon);
    // Calculate position info. We assume logos are wider than they are tall.
    //
    ASSERT(cxLogo >= cyLogo);
    // Put the icon on the left
    x = 2;
    // Center the icon vertically
    if (cyIcon <= cyLogo)
    {
        y = (cyLogo - cyIcon) / 2;
        dy = cyIcon;
        dx = cxIcon;
    }
    else
    {
        y = 0;
        dy = cyLogo;
        // keep shrinkage proportional
        dx = MulDiv(cxIcon, cyIcon, cyLogo);
    }
    // get ready to draw
    HDC hTBDC = GetDC( GetHWND());
    if ( !hTBDC )
    {
        return E_FAIL;
    }
    HDC hdc = CreateCompatibleDC( hTBDC );
    if (hdc)
    {
        RECT    rc;
        int     dx, dy, x, y;
        SIZE    size;
        hbmp = CreateCompatibleBitmap(hTBDC, cxLogo, cyLogo);
        if (hbmp)
        {
            HGDIOBJ hTmp = SelectObject(hdc, hbmp);
            HPALETTE hpalOld;
            HFONT hfont, hfontOld;
            if ( _hpalHalftone )
            {
                hpalOld = SelectPalette( hdc, _hpalHalftone, TRUE );
                // LINTASSERT(hpalOld || !hpalOld);     // 0 semi-ok for SelectPalette
                RealizePalette( hdc );
            }
            SetMapMode( hdc, MM_TEXT );
            rc.left = rc.top = 0;
            rc.bottom = cyLogo;
            rc.right = cxLogo;
            SHFillRectClr(hdc, &rc, COLORBK);
            // draw the icon into the memory DC.
            ImageList_GetIconSize(himl, &dx, &dy);
            x = DXFUDGE;
            y = ((cyLogo- dy) >> 1);
            ImageList_Draw( himl, iIcon, hdc, x, y, ILD_TRANSPARENT );
            hfont = (HFONT)GetStockObject(DEFAULT_GUI_FONT);
            if (hfont)
                hfontOld = (HFONT)SelectObject(hdc, hfont);
            GetTextExtentPoint32(hdc, pszText, lstrlen(pszText), &size);
            x += (dx + DXFUDGE);
            y = ((cyLogo- size.cy) >> 1);
            rc.left = x;
            UINT eto = ETO_CLIPPED;
            SetTextColor(hdc, COLORTEXT);
            SetBkMode(hdc, TRANSPARENT);
            ExtTextOut(hdc, x, y, eto, &rc
                                        , pszText, lstrlen(pszText), NULL);
            SelectObject(hdc, hfontOld);
            DeleteObject(hfont);
            if ( _hpalHalftone )
            {
                (void) SelectPalette( hdc, hpalOld, TRUE );
                RealizePalette( hdc );
            }
            // remove the final bitmap
            SelectObject( hdc, hTmp );
            hr = S_OK;
            if (FAILED(hr))
            {
                DeleteObject(hbmp);
                hbmp = NULL;
            }
        }
        DeleteDC(hdc);
    }
    ReleaseDC( GetHWND(), hTBDC );
    *phBmpLogo = hbmp;
    return hr;
}
HRESULT CLogoBase::FlushLogoCache( )
{
    HRESULT hr = E_UNEXPECTED;
    if (_pLogoCache)
    {
        // forcibly clear out the logo cache so the items get refetched ...
        _pLogoCache->Flush(TRUE);
        hr = S_OK;
    }
    return hr;
}
HRESULT CLogoBase::DitherBitmap( HBITMAP hBmp, HBITMAP * phBmpNew )
{
//     if ( !phBmpNew )
//     {
//         return E_INVALIDARG;
//     }
//
//     if ( _dwClrDepth > 8)
//     {
//         *phBmpNew = hBmp;
//         return S_FALSE;
//     }
//
//     IIntDitherer * pDither;
//     HRESULT hr = CoCreateInstance( CLSID_IntDitherer,
//                                    NULL,
//                                    CLSCTX_INPROC_SERVER,
//                                    IID_IIntDitherer,
//                                    (void **) & pDither );
//     if ( FAILED( hr ))
//     {
//         return hr;
//     }
//
//     static BYTE rgb[32768];
//     static BOOL fInit = FALSE;
//
//     if ( !fInit )
//     {
//         // init the inverse color map table
//         SHGetInverseCMAP( rgb, sizeof( rgb ));
//         fInit = TRUE;
//     }
//
//     HDC hMemDc = CreateCompatibleDC( NULL );
//     if ( !hMemDc )
//     {
//         pDither->Release();
//         return E_FAIL;
//     }
//
//     HBITMAP hOld = SelectObject( hdc, hBmp );
//
//     BITMAPINFO bi;
//
//     ZeroMemory( &bi, sizeof( bi ));
//     bi.bmiHeader.biSize = sizeof( BITMAPINFOHEADER );
//     bi.bmiHeader.biBitCount = 0;
//     bi.bmiHeader.biCompression = 0;
//
//     // get the header information....
//     iRet = GetDIBits( hMemDc, hBmp, 0, 0, NULL, &bi, DIB_RGB_COLORS );
//     if ( iRet != 0 )
//     {
//         LPVOID  pBuffer, pBits;
//         int iOffset = 0;
//
//         if ( bi.bmiHeader.biCompression == BI_BITFIELDS )
//         {
//             iOffset = sizeof( DWORD ) * 3;
//         }
//         else if ( bi.bmiHeader.biBitCount <= 8 )
//         {
//             if ( bi.bmiHeader.biClrUsed )
//             {
//                 iOffset = sizeof( RGBQUAD ) * bi.bmiHeader.biClrUsed;
//             }
//             else
//             {
//                 iOffset = (1 << bi.bmiHeader.biBitCount) * sizeof( RGBQUAD );
//             }
//         }
//
//         bi.bmiHeader.biHeight = iHeight;
//
//         // calc
//         pBuffer = LocalAlloc( LPTR, sizeof( BITMAPINFOHEADER ) +
//             bi.bmiHeader.biSizeImage +
//             iOffset );
//
//         // calc the size of the colour table so we put the data afterwards...
//         pBits = (( LPBYTE )pBuffer ) + sizeof( BITMAPINFOHEADER ) + iOffset;
//
//         CopyMemory( pBuffer, &bi, sizeof( BITMAPINFOHEADER ) );
//         iRet = GetDIBits( hMemDc, hBmp, 0, iHeight, pBits,
//                           ( LPBITMAPINFO )pBuffer, DIB_RGB_COLORS );
//
//
//         // we know we are going to 256 colour bitmap, so create a DIBSECTION as the destination ...
//         pDither->DitherTo8bpp(  BYTE * pDestBits, LONG nDestPitch,
//                         BYTE * pSrcBits, LONG nSrcPitch, REFGUID bfidSrc,
//                         RGBQUAD * prgbDestColors, RGBQUAD * prgbSrcColors,
//                         rgb,
//                         LONG x, LONG y, LONG cx, LONG cy,
//                         -1, -1);
//     }
//     pDither->Release();
    ASSERT( FALSE );
    return E_NOTIMPL;
}
int CLogoBase::AddIndicesToLogoList( int iIcon, UINT uIndex )
{
    int iRet = -1;
    LogoIndex * pIndex;
    LogoIndex rgNew;
    rgNew.iIcon = iIcon;
    rgNew.iLogo = (int) uIndex;
    if ( _fWide )
    {
        EnterCriticalSection( &s_csSharedLogos );
    }
    // scan to see if we have an extact match already in there...
    for ( int n = 0; n < DSA_GetItemCount( _hdsaLogoIndices ); n ++ )
    {
        pIndex = (LogoIndex *) DSA_GetItemPtr( _hdsaLogoIndices, n );
        ASSERT( pIndex );
        if ( pIndex->iLogo == (int) uIndex )
        {
            // set the icon just incase it changed...
            pIndex->iIcon = iIcon;
            iRet = n;
            break;
        }
    }
    if ( iRet == -1 )
    {
        iRet = DSA_AppendItem( _hdsaLogoIndices, &rgNew );
    }
    if ( _fWide )
    {
        LeaveCriticalSection( &s_csSharedLogos );
    }
    return iRet;
}
int CLogoBase::FindLogoFromIcon( int iIcon, int * piLastLogo )
{
    int iRet = -1;
    if ( !piLastLogo )
    {
        return -1;
    }
    LogoIndex * pIndex;
    if ( _fWide )
    {
        EnterCriticalSection( &s_csSharedLogos );
    }
    for ( int n = *piLastLogo + 1; n < DSA_GetItemCount( _hdsaLogoIndices ); n ++ )
    {
        pIndex = (LogoIndex *) DSA_GetItemPtr( _hdsaLogoIndices, n );
        ASSERT( pIndex );
        if ( pIndex->iIcon == iIcon )
        {
            *piLastLogo = n;
            iRet = pIndex->iLogo;
            break;
        }
    }
    if ( _fWide )
    {
        LeaveCriticalSection( &s_csSharedLogos );
    }
    return iRet;
}
class CImgCtxThumb :  public IExtractImage2,
                      public IRunnableTask,
                      public IPersistFile
{
    public:
        CImgCtxThumb();
        ~CImgCtxThumb();
        STDMETHOD( QueryInterface ) ( REFIID riid, void **ppvObj );
        STDMETHOD_( ULONG, AddRef ) ( void );
        STDMETHOD_( ULONG, Release ) ( void );
        // IExtractImage
        STDMETHOD (GetLocation) ( LPWSTR pszPathBuffer,
                                  DWORD cch,
                                  DWORD * pdwPriority,
                                  const SIZE * prgSize,
                                  DWORD dwRecClrDepth,
                                  DWORD *pdwFlags );
        STDMETHOD (Extract)( HBITMAP * phBmpThumbnail);
        STDMETHOD (GetDateStamp) ( FILETIME * pftTimeStamp );
        // IPersistFile
        STDMETHOD (GetClassID )(CLSID *pClassID);
        STDMETHOD (IsDirty )();
        STDMETHOD (Load )( LPCOLESTR pszFileName, DWORD dwMode);
        STDMETHOD (Save )( LPCOLESTR pszFileName, BOOL fRemember);
        STDMETHOD (SaveCompleted )( LPCOLESTR pszFileName);
        STDMETHOD (GetCurFile )( LPOLESTR *ppszFileName);
        STDMETHOD (Run)();
        STDMETHOD (Kill)( BOOL fWait );
        STDMETHOD (Suspend)();
        STDMETHOD (Resume)();
        STDMETHOD_(ULONG, IsRunning)();
        STDMETHOD ( InternalResume )();
   protected:
        friend void CALLBACK OnImgCtxChange( VOID * pvImgCtx, VOID * pv );
        void CImgCtxThumb::CalcAspectScaledRect( const SIZE * prgSize,
                                                 RECT * pRect );
        void CImgCtxThumb::CalculateAspectRatio( const SIZE * prgSize,
                                                 RECT * pRect );
        long m_cRef;
        BITBOOL m_fAsync : 1;
        BITBOOL m_fOrigSize : 1;
        WCHAR m_szPath[MAX_PATH * 4 + 7];
        HANDLE m_hEvent;
        SIZE m_rgSize;
        DWORD m_dwRecClrDepth;
        IImgCtx * m_pImg;
        LONG m_lState;
        HBITMAP * m_phBmp;
};
///////////////////////////////////////////////////////////////////////////////////////////
////////////////////////CImgCtxThumb///////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////////
STDAPI CImgCtxThumb_CreateInstance(IUnknown* pUnkOuter, IUnknown** ppunk, LPCOBJECTINFO poi)
{
    *ppunk = NULL;
    CImgCtxThumb * pExtract = new CImgCtxThumb();
    if (pExtract != NULL)
    {
#ifdef DEBUG
        // remove the pImage object, otherwise we will get bogus memory leaks...
        // this object is used by an object from shell32 which doesn't track and transfer the
        // memory...
        remove_from_memlist( pExtract );
#endif
        *ppunk = SAFECAST(pExtract, IPersistFile *);
        return S_OK;
    }
    return E_OUTOFMEMORY;
}
CImgCtxThumb::CImgCtxThumb( )
{
    m_fAsync = FALSE;
    StrCpyW( m_szPath, L"file://");
    m_cRef = 1;
    DllAddRef();
}
///////////////////////////////////////////////////////////////////////////////////////////
CImgCtxThumb::~CImgCtxThumb()
{
    ATOMICRELEASE( m_pImg );
    if ( m_hEvent )
    {
        CloseHandle( m_hEvent );
    }
    DllRelease();
}
///////////////////////////////////////////////////////////////////////////////////////////
STDMETHODIMP CImgCtxThumb::QueryInterface( REFIID riid, void **ppvObj )
{
    static const QITAB qit[] = {
        QITABENTMULTI( CImgCtxThumb, IExtractImage, IExtractImage2),
        QITABENT(CImgCtxThumb, IExtractImage2),
        QITABENT(CImgCtxThumb, IRunnableTask),
        QITABENT(CImgCtxThumb, IPersistFile),
        { 0 },
    };
    HRESULT hres = QISearch(this, qit, riid, ppvObj);
    if ( ppvObj == NULL )
    {
        return E_INVALIDARG;
    }
    return hres;
}
///////////////////////////////////////////////////////////////////////////////////////////
STDMETHODIMP_(ULONG) CImgCtxThumb::AddRef()
{
    InterlockedIncrement( &m_cRef );
    return m_cRef;
}
///////////////////////////////////////////////////////////////////////////////////////////
STDMETHODIMP_(ULONG) CImgCtxThumb::Release()
{
    if ( InterlockedDecrement( &m_cRef ))
        return m_cRef;
    delete this;
    return 0;
}
///////////////////////////////////////////////////////////////////////////////////////////
STDMETHODIMP CImgCtxThumb::GetLocation ( LPWSTR pszPathBuffer,
                                         DWORD cch,
                                         DWORD * pdwPriority,
                                         const SIZE * prgSize,
                                         DWORD dwRecClrDepth,
                                         DWORD *pdwFlags )
{
    if ( !pdwFlags || !pszPathBuffer || !prgSize )
    {
        return E_INVALIDARG;
    }
    m_rgSize = *prgSize;
    m_dwRecClrDepth = dwRecClrDepth;
    HRESULT hr = NOERROR;
    if ( *pdwFlags & IEIFLAG_ASYNC )
    {
        if ( !pdwPriority )
        {
            return E_INVALIDARG;
        }
        hr = E_PENDING;
        // lower than normal priority
        *pdwPriority = 0x01000000;
        m_fAsync = TRUE;
    }
    m_fOrigSize = BOOLIFY( *pdwFlags & IEIFLAG_ORIGSIZE );
    *pdwFlags = IEIFLAG_CACHE;
    PathCreateFromUrlW( m_szPath, pszPathBuffer, &cch, URL_UNESCAPE );
    return hr;
}
///////////////////////////////////////////////////////////////////////////////////////////
void CALLBACK OnImgCtxChange( void * pvImgCtx, VOID * pv )
{
    CImgCtxThumb * pThis = (CImgCtxThumb *) pv;
    ASSERT( pThis );
    ASSERT( pThis->m_hEvent );
    // we only asked to know about complete anyway....
    SetEvent( pThis->m_hEvent );
}
////////////////////////////////////////////////////////////////////////////////////
// This function makes no assumption about whether the thumbnail is square, so
// it calculates the scaling ratio for both dimensions and the uses that as
// the scaling to maintain the aspect ratio.
void CImgCtxThumb::CalcAspectScaledRect( const SIZE * prgSize, RECT * pRect )
{
    ASSERT( pRect->left == 0 );
    ASSERT( pRect->top == 0 );
    int iWidth = pRect->right;
    int iHeight = pRect->bottom;
    int iXRatio = (iWidth * 1000) / prgSize->cx;
    int iYRatio = (iHeight * 1000) / prgSize->cy;
    if ( iXRatio > iYRatio )
    {
        pRect->right = prgSize->cx;
        // work out the blank space and split it evenly between the top and the bottom...
        int iNewHeight = (( iHeight * 1000 ) / iXRatio);
        if ( iNewHeight == 0 )
        {
            iNewHeight = 1;
        }
        int iRemainder = prgSize->cy - iNewHeight;
        pRect->top = iRemainder / 2;
        pRect->bottom = iNewHeight + pRect->top;
    }
    else
    {
        pRect->bottom = prgSize->cy;
        // work out the blank space and split it evenly between the left and the right...
        int iNewWidth = (( iWidth * 1000 ) / iYRatio);
        if ( iNewWidth == 0 )
        {
            iNewWidth = 1;
        }
        int iRemainder = prgSize->cx - iNewWidth;
        pRect->left = iRemainder / 2;
        pRect->right = iNewWidth + pRect->left;
    }
}
void CImgCtxThumb::CalculateAspectRatio( const SIZE * prgSize, RECT * pRect )
{
    int iHeight = abs( pRect->bottom - pRect->top );
    int iWidth = abs( pRect->right - pRect->left );
    // check if the initial bitmap is larger than the size of the thumbnail.
    if ( iWidth > prgSize->cx || iHeight > prgSize->cy )
    {
        pRect->left = 0;
        pRect->top = 0;
        pRect->right = iWidth;
        pRect->bottom = iHeight;
        CalcAspectScaledRect( prgSize, pRect );
    }
    else
    {
        // if the bitmap was smaller than the thumbnail, just center it.
        pRect->left = ( prgSize->cx - iWidth ) / 2;
        pRect->top = ( prgSize->cy- iHeight ) / 2;
        pRect->right = pRect->left + iWidth;
        pRect->bottom = pRect->top + iHeight;
    }
}
///////////////////////////////////////////////////////////////////////////////////////////
STDMETHODIMP CImgCtxThumb::Extract ( HBITMAP * phBmpThumbnail)
{
    m_hEvent = CreateEvent( NULL, FALSE, FALSE, NULL );
    if ( !m_hEvent )
    {
        return E_OUTOFMEMORY;
    }
    m_phBmp = phBmpThumbnail;
    return InternalResume();
}
/////////////////////////////////////////////////////////////////////////////////////
STDMETHODIMP CImgCtxThumb::GetDateStamp ( FILETIME * pftTimeStamp )
{
    ASSERT( pftTimeStamp );
    HANDLE hFind;
    WIN32_FIND_DATAW rgData;
    WCHAR szBuffer[MAX_PATH];
    DWORD dwSize = ARRAYSIZE( szBuffer );
    PathCreateFromUrlW( m_szPath, szBuffer, &dwSize, URL_UNESCAPE );
    hFind = FindFirstFileW( szBuffer, &rgData );
    if (INVALID_HANDLE_VALUE != hFind)
    {
        *pftTimeStamp = rgData.ftLastWriteTime;
        FindClose( hFind );
        return S_OK;
    }
    return E_FAIL;
}
//////////////////////////////////////////////////////////////////////////////////////
STDMETHODIMP CImgCtxThumb::GetClassID(CLSID *pClassID)
{
    return E_NOTIMPL;
}
//////////////////////////////////////////////////////////////////////////////////////
STDMETHODIMP CImgCtxThumb::IsDirty()
{
    return E_NOTIMPL;
}
//////////////////////////////////////////////////////////////////////////////////////
STDMETHODIMP CImgCtxThumb::Load( LPCOLESTR pszFileName, DWORD dwMode)
{
    if ( !pszFileName )
    {
        return E_INVALIDARG;
    }
    if ( lstrlenW( pszFileName ) > ARRAYSIZE( m_szPath ) - 6 )
    {
        return E_FAIL;
    }
    DWORD dwAttrs = GetFileAttributesWrapW( pszFileName );
    if (( dwAttrs != (DWORD) -1) && (dwAttrs & FILE_ATTRIBUTE_OFFLINE ))
    {
        return E_FAIL;
    }
    
    DWORD dwSize = ARRAYSIZE( m_szPath );
    UrlCreateFromPathW( pszFileName, m_szPath, &dwSize, URL_ESCAPE_UNSAFE );
    return NOERROR;
}
//////////////////////////////////////////////////////////////////////////////////////
STDMETHODIMP CImgCtxThumb::Save( LPCOLESTR pszFileName, BOOL fRemember)
{
    return E_NOTIMPL;
}
//////////////////////////////////////////////////////////////////////////////////////
STDMETHODIMP CImgCtxThumb::SaveCompleted( LPCOLESTR pszFileName)
{
    return E_NOTIMPL;
}
//////////////////////////////////////////////////////////////////////////////////////
STDMETHODIMP CImgCtxThumb::GetCurFile( LPOLESTR *ppszFileName)
{
    return E_NOTIMPL;
}
///////////////////////////////////////////////////////////////////////////////////////////
STDMETHODIMP CImgCtxThumb::Run()
{
    return E_NOTIMPL;
}
///////////////////////////////////////////////////////////////////////////////////////////
STDMETHODIMP CImgCtxThumb::Kill( BOOL fUnused)
{
    LONG lRes = InterlockedExchange( & m_lState, IRTIR_TASK_PENDING );
    if ( lRes != IRTIR_TASK_RUNNING )
    {
        m_lState = lRes;
    }
    if ( m_hEvent )
    {
        SetEvent( m_hEvent );
    }
    return NOERROR;
}
///////////////////////////////////////////////////////////////////////////////////////////
STDMETHODIMP CImgCtxThumb::Resume()
{
    if ( m_lState != IRTIR_TASK_SUSPENDED )
    {
        return S_FALSE;
    }
    return InternalResume();
}
///////////////////////////////////////////////////////////////////////////////////////////
STDMETHODIMP CImgCtxThumb::Suspend()
{
    LONG lRes = InterlockedExchange( & m_lState, IRTIR_TASK_SUSPENDED );
    if ( lRes != IRTIR_TASK_RUNNING )
    {
        m_lState = lRes;
    }
    if ( m_hEvent )
    {
        SetEvent( m_hEvent );
    }
    return NOERROR;
}
///////////////////////////////////////////////////////////////////////////////////////////
STDMETHODIMP_(ULONG) CImgCtxThumb::IsRunning()
{
    return m_lState;
}
//////////////////////////////////////////////////////////////////////////////////////
STDMETHODIMP CImgCtxThumb::InternalResume()
{
    if ( m_phBmp == NULL )
    {
        return E_UNEXPECTED;
    }
    m_lState = IRTIR_TASK_RUNNING;
    HRESULT hr = NOERROR;
    if ( !m_pImg )
    {
        hr = CoCreateInstance(CLSID_IImgCtx, NULL, CLSCTX_INPROC_SERVER,
                          IID_IImgCtx, (LPVOID*)&m_pImg);
        ASSERT( SUCCEEDED( hr ));
        if (SUCCEEDED(hr))
        {
            ASSERT(m_pImg);
            hr = m_pImg->Load(m_szPath, DWN_RAWIMAGE | m_dwRecClrDepth);
            if ( SUCCEEDED( hr ))
            {
                hr = m_pImg->SetCallback( OnImgCtxChange, this );
            }
            if ( SUCCEEDED( hr ))
            {
                hr = m_pImg->SelectChanges( IMGCHG_COMPLETE, 0, TRUE);
            }
            if ( FAILED( hr ))
            {
                ATOMICRELEASE( m_pImg );
                m_lState = IRTIR_TASK_FINISHED;
                return hr;
            }
        }
        else
        {
            m_lState = IRTIR_TASK_FINISHED;
            return hr;
        }
    }
    ULONG fState;
    SIZE  rgSize;
    m_pImg->GetStateInfo(&fState, &rgSize, TRUE);
    if ( !( fState & IMGLOAD_COMPLETE ))
    {
        do
        {
            DWORD dwRet = MsgWaitForMultipleObjects( 1,
                                                     &m_hEvent,
                                                     FALSE,
                                                     INFINITE,
                                                     QS_ALLINPUT );
            if ( dwRet != WAIT_OBJECT_0 )
            {
                // check the event anyway, msgs get checked first, so
                // it could take a while for this to get fired otherwise..
                dwRet = WaitForSingleObject( m_hEvent, 0 );
            }
            if ( dwRet == WAIT_OBJECT_0 )
            {
                break;
            }
            MSG msg;
            // empty the message queue...
            while( PeekMessage( &msg, NULL, 0, 0, PM_REMOVE ))
            {
            if (( msg.message >= WM_KEYFIRST && msg.message <= WM_KEYLAST ) ||
                ( msg.message >= WM_MOUSEFIRST && msg.message <= WM_MOUSELAST  && msg.message != WM_MOUSEMOVE ))
            {
                continue;
            }
                TranslateMessage( &msg );
                DispatchMessage( &msg );
            }
        } while (TRUE);
        // check why we broke out...
        if ( m_lState == IRTIR_TASK_PENDING )
        {
            m_lState = IRTIR_TASK_FINISHED;
            m_pImg->Disconnect();
            ATOMICRELEASE( m_pImg );
            return E_FAIL;
        }
        if ( m_lState == IRTIR_TASK_SUSPENDED )
            return E_PENDING;
        m_pImg->GetStateInfo(&fState, &rgSize, TRUE);
    }
    hr = (fState & IMGLOAD_ERROR) ? E_FAIL : S_OK;
    if ( SUCCEEDED( hr ))
    {
        HWND hwnd = GetDesktopWindow();
        HDC hdc = GetDC( hwnd );
        // LINTASSERT(hdc || !hdc);     // 0 semi-ok
        LPVOID lpBits;
        HDC hdcBmp = CreateCompatibleDC( hdc );
        if ( hdcBmp && hdc )
        {
            struct {
                BITMAPINFOHEADER bi;
                DWORD            ct[256];
            } dib;
            dib.bi.biSize            = sizeof(BITMAPINFOHEADER);
            //
            // On NT5 we go directly to the thumbnail with StretchBlt
            // on other OS's we make a full size copy and pass the bits
            // to ScaleSharpen2().
            //
            if ( IsOS ( OS_NT5 ) )
            {
                dib.bi.biWidth       = m_rgSize.cx;
                dib.bi.biHeight      = m_rgSize.cy;
            }
            else
            {
                dib.bi.biWidth       = rgSize.cx;
                dib.bi.biHeight      = rgSize.cy;
            }
            dib.bi.biPlanes          = 1;
            dib.bi.biBitCount        = (WORD) m_dwRecClrDepth;
            dib.bi.biCompression     = BI_RGB;
            dib.bi.biSizeImage       = 0;
            dib.bi.biXPelsPerMeter   = 0;
            dib.bi.biYPelsPerMeter   = 0;
            dib.bi.biClrUsed         = ( m_dwRecClrDepth <= 8 ) ? (1 << m_dwRecClrDepth) : 0;
            dib.bi.biClrImportant    = 0;
            HPALETTE hpal = NULL;
            HPALETTE hpalOld = NULL;
            if ( m_dwRecClrDepth <= 8 )
            {
                if ( m_dwRecClrDepth == 8 )
                {
                    // need to get the right palette....
                    hr = m_pImg->GetPalette( & hpal );
                }
                else
                {
                    hpal = (HPALETTE) GetStockObject( DEFAULT_PALETTE );
                }
                if ( SUCCEEDED( hr ) && hpal )
                {
                    hpalOld = SelectPalette( hdcBmp, hpal, TRUE );
                    // LINTASSERT(hpalOld || !hpalOld); // 0 semi-ok for SelectPalette
                    RealizePalette( hdcBmp );
                    int n = GetPaletteEntries(hpal, 0, 256, (LPPALETTEENTRY)&dib.ct[0]);
                    ASSERT( n == (int) dib.bi.biClrUsed );
                    for (int i = 0; i < (int)dib.bi.biClrUsed; i ++)
                        dib.ct[i] = RGB(GetBValue(dib.ct[i]),GetGValue(dib.ct[i]),GetRValue(dib.ct[i]));
                }
            }
            HBITMAP hBmp = CreateDIBSection(hdcBmp, (LPBITMAPINFO)&dib, DIB_RGB_COLORS, &lpBits, NULL, 0);
            if ( hBmp != NULL )
            {
                HGDIOBJ hOld = SelectObject( hdcBmp, hBmp );
                //
                // On NT5 Go directly to the Thumbnail with StretchBlt()
                //
                if ( IsOS ( OS_NT5 ) )
                {
                    // Compute output size of thumbnail
                    RECT rectThumbnail;
                    rectThumbnail.left   = 0;
                    rectThumbnail.top    = 0;
                    
                    rectThumbnail.right  = m_rgSize.cx;
                    rectThumbnail.bottom = m_rgSize.cy;
                    
                    FillRect( hdcBmp, &rectThumbnail, (HBRUSH) (COLOR_WINDOW+1));
                    rectThumbnail.right  = rgSize.cx;
                    rectThumbnail.bottom = rgSize.cy;
                    CalculateAspectRatio (&m_rgSize, &rectThumbnail);
                    // Call DanielC for the StretchBlt
                    SetStretchBltMode (hdcBmp, HALFTONE);
                    // Create the thumbnail
                    m_pImg->StretchBlt( hdcBmp,
                                        rectThumbnail.left,
                                        rectThumbnail.top,
                                        rectThumbnail.right - rectThumbnail.left,
                                        rectThumbnail.bottom - rectThumbnail.top,
                                        0, 0,
                                        rgSize.cx,
                                        rgSize.cy,
                                        SRCCOPY);
                    SelectObject( hdcBmp, hOld );
                    *m_phBmp = hBmp;
                }
                else
                {
                    //
                    // On systems other than NT5 make a full size copy of
                    // the bits and pass the copy to ScaleSharpen2().
                    //
                    RECT rectThumbnail;
                    rectThumbnail.left   = 0;
                    rectThumbnail.top    = 0;
                    
                    rectThumbnail.right  = rgSize.cx;
                    rectThumbnail.bottom = rgSize.cy;
                    
                    FillRect( hdcBmp, &rectThumbnail, (HBRUSH) (COLOR_WINDOW+1));
                    m_pImg->StretchBlt( hdcBmp,
                                        0, 0,
                                        rgSize.cx,
                                        rgSize.cy,
                                        0, 0,
                                        rgSize.cx,
                                        rgSize.cy,
                                        SRCCOPY);
                    SelectObject( hdcBmp, hOld );
                    if ( m_rgSize.cx == rgSize.cx && m_rgSize.cy == rgSize.cy )
                    {
                        *m_phBmp = hBmp;
                    }
                    else
                    {
                        SIZEL rgCur;
                        rgCur.cx = rgSize.cx;
                        rgCur.cy = rgSize.cy;
                        IScaleAndSharpenImage2 * pScale;
                        hr = CoCreateInstance( CLSID_ThumbnailScaler,
                                               NULL,
                                               CLSCTX_INPROC_SERVER,
                                               IID_IScaleAndSharpenImage2,
                                               (LPVOID *) &pScale );
                        if ( SUCCEEDED( hr ))
                        {
                            hr = pScale->ScaleSharpen2((BITMAPINFO *) &dib,
                                                        lpBits,
                                                        m_phBmp,
                                                        &m_rgSize,
                                                        m_dwRecClrDepth,
                                                        hpal,
                                                        20, m_fOrigSize );
                            pScale->Release();
                        }
                        DeleteObject( hBmp );
                    }
                }
            }
            if ( SUCCEEDED( hr ) && hpal && m_dwRecClrDepth <= 8)
            {
                (void) SelectPalette( hdcBmp, hpalOld, TRUE );
                RealizePalette( hdcBmp );
            }
            if ( m_dwRecClrDepth < 8 )
            {
                // we used a stock 16 colour palette
                DeletePalette( hpal );
            }
        }
        if ( hdc )
        {
            ReleaseDC( hwnd, hdc );
        }
        if ( hdcBmp )
        {
            DeleteDC( hdcBmp );
        }
    }
    m_pImg->Disconnect();
    ATOMICRELEASE( m_pImg );
    
    m_lState = IRTIR_TASK_FINISHED;
    return hr;
}

						