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thextdd.cpp
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Upload User: xhy777
Upload Date: 2007-02-14
Package Size: 24088k
Code Size: 5k
Category:

Windows Kernel

Development Platform:

Visual C++

thextdd.cpp：Code Content
  1. /* sample source code for IE4 view extension
  2.  * 
  3.  * Copyright Microsoft 1996
  4.  *
  5.  * This file implements the IShellFolderView interface
  6.  */
  8. #include "precomp.h"
  10. //////////////////////////////////////////////////////////////////////////////////
  11. void CThumbnailView::SortBy( LPARAM dwArrange, BOOL fAscend )
  12. {
  13.     if (m_hWndListView != NULL )
  14.     {
  15.         // now sort the view ...
  16.         ListViewCompareStruct   rgCompare;
  18.         // the shell always loses the sort item, so shall we :-)
  19.         rgCompare.m_iCompareFlag = dwArrange;
  20.         rgCompare.m_iAscend = ( fAscend ? 1 : -1 );
  21.         rgCompare.m_pFolder = m_pFolder;
  22.         m_pFolder->AddRef();
  24.         ListView_SortItems( m_hWndListView, ListViewCompare, ( LPARAM ) &rgCompare );
  25.             
  26.         rgCompare.m_pFolder->Release();
  27.     }
  28. }
  30. //////////////////////////////////////////////////////////////////////////////////
  31. HRESULT CThumbnailView::EnumFolder( )
  32. {
  33.     ULONG ulType = SHCONTF_FOLDERS | SHCONTF_NONFOLDERS;
  35.     if ( m_fShowAllObjects )
  36.        ulType |= SHCONTF_INCLUDEHIDDEN;
  37.     
  38.     IEnumIDList *pEnum;
  39.     HRESULT hr = m_pFolder->EnumObjects(this->m_hWnd, ulType, &pEnum);
  40.     if (hr == S_OK)
  41.     {
  42.         for (;;)
  43.         {
  44.             ULONG celtFetched;
  45.             LPITEMIDLIST pidlList;
  46.             hr = pEnum->Next( 1, &pidlList, &celtFetched );
  47.             if ((hr == S_OK) && (celtFetched == 1))
  48.             {
  49.                 int iRes = this->AddItem(pidlList);
  50.                 if ( iRes == -1 )
  51.                     SHFree(pidlList);  // AddItem() failed, clean up
  52.             }
  53.             else
  54.                 break;      // end of loop ....
  55.         }
  57.         pEnum->Release();
  58.     }
  59.     else if (hr == S_FALSE)
  60.     {
  61.         IShellFolderView *psfv;
  62.         hr = m_pDefView->QueryInterface(IID_IShellFolderView, (void **)&psfv);
  63.         if (SUCCEEDED(hr))
  64.         {
  65.             UINT cItems;
  66.             hr = psfv->GetObjectCount(&cItems);
  67.             if (SUCCEEDED(hr))
  68.             {
  69.                 for (UINT i = 0; i < cItems ; i++)
  70.                 {
  71.                     LPITEMIDLIST pidl;
  72.                     if (SUCCEEDED(psfv->GetObject(&pidl, i)))
  73.                     {
  74.                         LPITEMIDLIST pidlAdd = ILClone(pidl);
  75.                         if (pidlAdd)
  76.                         {
  77.                             if (-1 == this->AddItem(pidlAdd))
  78.                                 ILFree(pidlAdd);
  79.                         }
  80.                     }
  81.                 }
  82.             }
  83.         }
  84.     }
  85.     
  86.     return hr;
  87. }
  89. //////////////////////////////////////////////////////////////////////////////////
  90. void CThumbnailView::FocusOnSomething( )
  91. {
  92.     ListView_SetItemState( m_hWndListView, 0, LVIS_FOCUSED, LVIS_FOCUSED );
  93. }
  95. int CThumbnailView::AddItem( LPCITEMIDLIST pidl )
  96. {
  97.     int iPos = -1;
  99.     // NOTE: the IShellView we pass is the one for the Def-View, if it 
  100.     // NOTE: needs to delegate to us, it will.
  101.     if (m_pCommDlg == NULL || 
  102.         S_FALSE != m_pCommDlg->IncludeObject(m_pDefView, pidl))
  103.     {
  104.         // note: the icon is done on a callback so that we only fetch those displayed
  105.         WCHAR szTextBuffer[MAX_PATH];
  106.         LV_ITEMW rgData;
  107.         ZeroMemory( &rgData, sizeof( rgData ));
  108.         rgData.mask = LVIF_TEXT | LVIF_IMAGE | LVIF_PARAM;
  109.         rgData.iItem = 0x7fffffff - 1;
  110.         rgData.lParam = (LPARAM) pidl;
  112.         rgData.iImage = I_IMAGECALLBACK;
  113.         rgData.pszText = szTextBuffer;
  115.         ULONG ulAttrs = SFGAO_GHOSTED;
  116.         if ( SUCCEEDED(m_pFolder->GetAttributesOf( 1, &pidl, &ulAttrs )) && ulAttrs & SFGAO_GHOSTED )
  117.         {
  118.             rgData.stateMask = LVIS_CUT;
  119.             rgData.state = LVIS_CUT;
  120.             rgData.mask |= LVIF_STATE;
  121.         }
  122.    
  123.         STRRET strret;
  124.         if (SUCCEEDED(m_pFolder->GetDisplayNameOf( pidl, SHGDN_NORMAL, &strret )))
  125.         {
  126.             StrRetToBufW(&strret, pidl, szTextBuffer, ARRAYSIZE(szTextBuffer));
  127.             iPos = ListView_InsertItemWrapW( m_hWndListView, &rgData);
  128.         }
  129.     }
  130.     return iPos;
  131. }
  133. ///////////////////////////////////////////////////////////////////////////////////////////
  134. //////////////////////////////CDropTargetClient////////////////////////////////////////////
  135. ///////////////////////////////////////////////////////////////////////////////////////////
  136. void CThumbnailView::PreScrolling( WORD wVertical, WORD wHorizontal )
  137. {
  138.     // do nothing...
  139. }
  141. //////////////////////////////////////////////////////////////////////////////////////////
  142. void CThumbnailView::GetOrigin( POINT * prgOrigin )
  143. {
  144.     Assert( prgOrigin != NULL );
  145.     ListView_GetOrigin( m_hWndListView, prgOrigin );
  146. }
  148. //////////////////////////////////////////////////////////////////////////////////////////
  149. HWND CThumbnailView::GetWindow()
  150. {
  151.     return m_hWndListView;
  152. }
  154. //////////////////////////////////////////////////////////////////////////////////////////
  155. BOOL CThumbnailView::WasDragStartedHere()
  156. {
  157.     return m_fDragStarted;
  158. }
  160. //////////////////////////////////////////////////////////////////////////////////////////
  161. HRESULT CThumbnailView::MoveSelectedItems( int iDx, int iDy )
  162. {
  163.     // nothing to move behind the scenes ...
  164.     m_fItemsMoved = TRUE;
  165.     return NOERROR;
  166. }