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dllaccesbridge.h
Package: helix.src.0812.rar [view]
Upload User: zhongxx05
Upload Date: 2007-06-06
Package Size: 33641k
Code Size: 8k
Category:
Symbian
Development Platform:
C/C++
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #ifndef _DLLACCESBRIDGE_H_
- #define _DLLACCESBRIDGE_H_
- /************************************************************************
- * Defines
- */
- #if defined(HELIX_FEATURE_DLLACCESS_CLIENT)
- #define DLL_ACCESSBRIDGE_IMPL DLLAccessClient
- #define DLL_ACCESSBRIDGE_OPEN(x, y, z) open((x), (y), (z))
- #include "dllaccesclient.h"
- #else // HELIX_FEATURE_DLLACCESS_CLIENT
- #define DLL_ACCESSBRIDGE_IMPL DLLAccess
- #define DLL_ACCESSBRIDGE_OPEN(x, y, z) open((x), (y))
- #include "dllacces.h"
- #endif // HELIX_FEATURE_DLLACCESS_CLIENT
- /************************************************************************
- * Includes
- */
- #include "hxcom.h"
- class DLLAccessBridge
- {
- public:
- /////////////////////////////////////////////////////////////
- // Function:
- // DLLAccessBridge
- //
- // Parameters:
- // None
- //
- // Returns:
- // Nothing
- //
- // Notes:
- // Default constructor initializes internal structures for
- // subsequent call to open()
- //
- DLLAccessBridge()
- {
- ;
- }
- /////////////////////////////////////////////////////////////
- // Function:
- // DLLAccessBridge
- //
- // Parameters:
- // dllName - Name of shared library
- //
- // Returns:
- // Nothing
- //
- // Notes:
- // Attempts to load library dllName. If unsuccessful, m_curError
- // is set to DLLAccess::NO_LOAD and platform specific error
- // info is stored in m_curStringError.
- //
- DLLAccessBridge(const char* dllName,
- UINT16 nLibType = 0,
- IUnknown* pContext = NULL)
- {
- m_Impl.DLL_ACCESSBRIDGE_OPEN(dllName, nLibType, pContext);
- }
- //////////////////////////////////////////////////////////////
- // Function:
- // ~DLLAccessBridge
- //
- // Paramters:
- // None
- //
- // Returns:
- // Nothing
- //
- // Notes:
- // Unloads library from memory. See 'close' below.
- //
- ~DLLAccessBridge()
- {
- ;
- }
- ///////////////////////////////////////////////////////////////
- // Function:
- // open(const char* dllName)
- //
- // Parameters:
- // dllName - Name of shared library
- //
- // Returns:
- // DLLAccess::OK if successful, else DLLAccess::NO_LOAD.
- // Platform specific error info is stored in m_curStringError.
- //
- // Notes:
- //
- int open(const char* dllName,
- UINT16 nLibType = 0,
- IUnknown* pContext = NULL)
- {
- return m_Impl.DLL_ACCESSBRIDGE_OPEN(dllName, nLibType, pContext);
- }
- ///////////////////////////////////////////////////////////////
- // Function:
- // close()
- //
- // Parameters:
- // none
- //
- // Returns:
- // DLLAccess::OK if successful, else DLL_ACCESS::NO_LOAD.
- //
- // Notes:
- // Shared library usage is typically reference counted by the
- // OS: the library is actually unloaded when the reference count
- // reaches zero. Thus this call does not guarantee that the
- // library will be removed from memory.
- //
- int close()
- {
- return m_Impl.close();
- }
- ///////////////////////////////////////////////////////////////
- // Function:
- // getSymbol(const char* symName)
- //
- // Parameters:
- // symName: symbol to retrieve from shared library
- //
- // Returns:
- // ptr to code in library if successful, else returns NULL
- // and m_curError is set to DLLAccess::BAD_SYMBOL.
- //
- // Notes:
- //
- void* getSymbol(const char* symName)
- {
- return m_Impl.getSymbol(symName);
- }
- ///////////////////////////////////////////////////////////////
- // Function:
- // getError
- //
- // Parameters:
- // none
- //
- // Returns:
- // value of m_curError
- //
- // Notes:
- // none
- //
- int getError()
- {
- return m_Impl.getError();
- }
- ///////////////////////////////////////////////////////////////
- // Function:
- // getErrorString
- //
- // Parameters:
- // none
- //
- // Returns:
- // value of m_curErrorString
- //
- // Notes:
- // none
- //
- const char* getErrorString()
- {
- return m_Impl.getErrorString();
- }
- ///////////////////////////////////////////////////////////////
- // Function:
- // getDLLName
- //
- // Parameters:
- // none
- //
- // Returns:
- // value of m_DLLName
- //
- // Notes:
- // none
- //
- const char* getDLLName()
- {
- return m_Impl.getDLLName();
- }
- ///////////////////////////////////////////////////////////////
- // Function:
- // getVersion
- //
- // Parameters:
- // none
- //
- // Returns:
- // value of m_Version
- //
- // Notes:
- // none
- //
- const char* getVersion()
- {
- return m_Impl.getVersion();
- }
- void CreateName(const char* short_name,
- const char* long_name,
- char* out_buf,
- UINT32& out_buf_len)
- {
- m_Impl.CreateName(short_name,
- long_name,
- out_buf,
- out_buf_len);
- }
- // This overloaded version has been added to allow user to specify major and minor
- // version of the DLL name you are trying to create. It will append major and minor version
- // to the name. If you use the other function, then the major and minor versions of pnmisc
- // will be used. See pnmisc.ver in that case.
- void CreateName(const char* short_name,
- const char* long_name,
- char* out_buf,
- UINT32& out_buf_len,
- UINT32 nMajor,
- UINT32 nMinor)
- {
- m_Impl.CreateName(short_name,
- long_name,
- out_buf,
- out_buf_len,
- nMajor,
- nMinor);
- }
- ///////////////////////////////////////////////////////////////
- // Function:
- // isOpen
- //
- // Parameters:
- // none
- //
- // Returns:
- // value of m_isOpen
- //
- // Notes:
- // none
- //
- BOOL isOpen(void)
- {
- return m_Impl.isOpen();
- }
- private:
- DLL_ACCESSBRIDGE_IMPL m_Impl;
- };
- #endif // _DLLACCESBRIDGE_H_