62 lines
1.6 KiB
C++
62 lines
1.6 KiB
C++
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/*++
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Microsoft Confidential
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Copyright (c) 1992-2000 Microsoft Corporation
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All rights reserved
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Module Name:
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srcfg.cpp
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Abstract:
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Adds System Restore tab to the System Control Panel Applet if necessary.
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Author:
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skkhang 15-Jun-2000
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NOTE (7/26/00 skkhang):
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Now there is no code to unload srrstr.dll, because property page proc
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cannot unload the DLL. It is acceptable for the current CPL mechanism --
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using a separate process rundll32.exe which would clean up any loaded
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DLLs during termination. However, if system CPL is loaded in the context
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of, e.g., Shell itself, srrstr.dll will be leaked.
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One possible solution is to place a proxy property page proc in this file
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and calls the real proc in srrstr.dll only when srrstr.dll is loaded
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in the memory. Of course, even in that case, determination of whether to
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show SR Tab or not must be made first of all.
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--*/
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#include "sysdm.h"
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typedef HPROPSHEETPAGE (WINAPI *SRGETPAGEPROC)();
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static LPCWSTR s_cszSrSysCfgDllName = L"srrstr.dll";
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static LPCSTR s_cszSrGetPageProc = "SRGetCplPropPage";
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HPROPSHEETPAGE
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CreateSystemRestorePage(int, DLGPROC)
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{
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HPROPSHEETPAGE hRet = NULL;
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HMODULE hModSR = NULL;
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SRGETPAGEPROC pfnGetPage;
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hModSR = ::LoadLibrary( s_cszSrSysCfgDllName );
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if ( hModSR == NULL )
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goto Exit;
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pfnGetPage = (SRGETPAGEPROC)::GetProcAddress( hModSR, s_cszSrGetPageProc );
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if ( pfnGetPage == NULL )
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goto Exit;
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hRet = pfnGetPage();
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Exit:
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if ( hRet == NULL )
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::FreeLibrary( hModSR );
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return( hRet );
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}
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