sal/systools/win32/uwinapi/DllGetVersion.cpp

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  30
  31 #define WIN32_LEAN_AND_MEAN
  32 #ifdef _MSC_VER
  33 #pragma warning(push,1)
  34 #endif
  35 #include <windows.h>
  36 #include <shlwapi.h>
  37 #ifdef _MSC_VER
  38 #pragma warning(pop)
  39 #endif
  40 #include <malloc.h>
  41
  42 extern HMODULE          UWINAPI_BaseAddress;
  43
  44 // This function should be exported by every DLL that wants to provide it's version number.
  45 // This code automaticly generates the information from the version resource
  46
  47 extern "C" HRESULT CALLBACK DllGetVersion( DLLVERSIONINFO *pdvi )
  48 {
  49     TCHAR       szModulePath[MAX_PATH];
  50     BOOL        fSuccess = FALSE;
  51
  52     if ( UWINAPI_BaseAddress && GetModuleFileName( UWINAPI_BaseAddress, szModulePath, MAX_PATH ) )
  53     {
  54         DWORD   dwHandle = 0;
  55         DWORD   dwSize = GetFileVersionInfoSize( szModulePath, &dwHandle );
  56         LPVOID  lpData = _alloca( dwSize );
  57
  58         if ( GetFileVersionInfo( szModulePath, dwHandle, dwSize, lpData ) )
  59         {
  60             VS_FIXEDFILEINFO    *lpBuffer = NULL;
  61             UINT        uLen = 0;
  62
  63             if ( VerQueryValue( lpData, TEXT("\\"), (LPVOID *)&lpBuffer, &uLen ) )
  64             {
  65                 pdvi->dwMajorVersion = HIWORD( lpBuffer->dwFileVersionMS );
  66                 pdvi->dwMinorVersion = LOWORD( lpBuffer->dwFileVersionMS );
  67                 pdvi->dwBuildNumber = HIWORD( lpBuffer->dwFileVersionLS );
  68                 pdvi->dwPlatformID = (DWORD) ((lpBuffer->dwFileOS & VOS_NT) ? DLLVER_PLATFORM_NT : DLLVER_PLATFORM_WINDOWS);
  69
  70                 fSuccess = TRUE;
  71             }
  72         }
  73     }
  74
  75     return fSuccess ? HRESULT_FROM_WIN32( GetLastError() ) : HRESULT_FROM_WIN32( NO_ERROR );
  76 }