问如何使用GetFileVersionInfo函数？

EN

void GetFileVersion( PCHAR pFilePath  ,PVERSION pRetVersion)
{
DWORD               dwSize              = 0;
BYTE                *pVersionInfo       = NULL;
VS_FIXEDFILEINFO    *pFileInfo          = NULL;
UINT                pLenFileInfo        = 0;


/*getting the file version info size */
dwSize = GetFileVersionInfoSize( pFilePath, NULL );
if ( dwSize == 0 )
{
    printf( "Error in GetFileVersionInfoSize: %d\n", GetLastError() );
    return;
}

pVersionInfo = new BYTE[ dwSize ]; /*allocation of space for the verison size */

if ( !GetFileVersionInfo( pFilePath, 0, dwSize, pVersionInfo ) ) /*entering all info     data to pbVersionInfo*/
{
    printf( "Error in GetFileVersionInfo: %d\n", GetLastError() );
    delete[] pVersionInfo;
    return;
}

if ( !VerQueryValue( pVersionInfo, TEXT("\\"), (LPVOID*) &pFileInfo, &pLenFileInfo ) )
{
    printf( "Error in VerQueryValue: %d\n", GetLastError() );
    delete[] pVersionInfo;
    return;
}


/*checking if the allocation succeeded */
if (NULL == pRetVersion)
{
    printf("Allocation failed! \n" , GetLastError());
    return;
}


pRetVersion->major  =  ( pFileInfo->dwFileVersionMS >> 16 ) & 0xffff ;
pRetVersion->minor  =  ( pFileInfo->dwFileVersionMS) & 0xffff;
pRetVersion->hotfix =  ( pFileInfo->dwFileVersionLS >>  16 ) & 0xffff;
pRetVersion->other  =  ( pFileInfo->dwFileVersionLS) & 0xffff;      

}