getdxver.cpp

墨香完整原代码 C++ 值得研究 可以编译

        }
        
        // Switch off the d3drg8x.dll version
        _tcscpy( szFile, szPath );
        _tcscat( szFile, TEXT("\\d3drg8x.dll") );
        if( SUCCEEDED( GetFileVersion( szFile, &llFileVersion ) ) )
        {
            if( CompareLargeInts( llFileVersion, MakeInt64( 4, 4, 0, 70 ) ) >= 0 ) // Win9x version
            {                    
                // d3drg8x.dll is the DX3.0a version, so we must be DX3.0a or DX3.0b  (no redist change)
                if( pdwDirectXVersionMajor ) *pdwDirectXVersionMajor = 3;
                if( pdwDirectXVersionMinor ) *pdwDirectXVersionMinor = 0;
                if( pcDirectXVersionLetter ) *pcDirectXVersionLetter = TEXT('a');
                bFound = true;
            }
        }       

        // Switch off the ddraw version
        _tcscpy( szFile, szPath );
        _tcscat( szFile, TEXT("\\ddraw.dll") );
        if( SUCCEEDED( GetFileVersion( szFile, &llFileVersion ) ) )
        {
            if( CompareLargeInts( llFileVersion, MakeInt64( 4, 5, 0, 155 ) ) >= 0 ) // Win9x version
            {                    
                // ddraw.dll is the DX5.0 version, so we must be DX5.0 or DX5.2 (no redist change)
                if( pdwDirectXVersionMajor ) *pdwDirectXVersionMajor = 5;
                if( pdwDirectXVersionMinor ) *pdwDirectXVersionMinor = 0;
                if( pcDirectXVersionLetter ) *pcDirectXVersionLetter = TEXT(' ');
                bFound = true;
            }

            if( CompareLargeInts( llFileVersion, MakeInt64( 4, 6, 0, 318 ) ) >= 0 ) // Win9x version
            {                    
                // ddraw.dll is the DX6.0 version, so we must be at least DX6.0
                if( pdwDirectXVersionMajor ) *pdwDirectXVersionMajor = 6;
                if( pdwDirectXVersionMinor ) *pdwDirectXVersionMinor = 0;
                if( pcDirectXVersionLetter ) *pcDirectXVersionLetter = TEXT(' ');
                bFound = true;
            }

            if( CompareLargeInts( llFileVersion, MakeInt64( 4, 6, 0, 436 ) ) >= 0 ) // Win9x version
            {                    
                // ddraw.dll is the DX6.1 version, so we must be at least DX6.1
                if( pdwDirectXVersionMajor ) *pdwDirectXVersionMajor = 6;
                if( pdwDirectXVersionMinor ) *pdwDirectXVersionMinor = 1;
                if( pcDirectXVersionLetter ) *pcDirectXVersionLetter = TEXT(' ');
                bFound = true;
            }
        }

        // Switch off the dplayx.dll version
        _tcscpy( szFile, szPath );
        _tcscat( szFile, TEXT("\\dplayx.dll") );
        if( SUCCEEDED( GetFileVersion( szFile, &llFileVersion ) ) )
        {
            if( CompareLargeInts( llFileVersion, MakeInt64( 4, 6, 3, 518 ) ) >= 0 ) // Win9x version
            {                    
                // ddraw.dll is the DX6.1 version, so we must be at least DX6.1a
                if( pdwDirectXVersionMajor ) *pdwDirectXVersionMajor = 6;
                if( pdwDirectXVersionMinor ) *pdwDirectXVersionMinor = 1;
                if( pcDirectXVersionLetter ) *pcDirectXVersionLetter = TEXT('a');
                bFound = true;
            }
        }

        // Switch off the ddraw version
        _tcscpy( szFile, szPath );
        _tcscat( szFile, TEXT("\\ddraw.dll") );
        if( SUCCEEDED( GetFileVersion( szFile, &llFileVersion ) ) )
        {
            if( CompareLargeInts( llFileVersion, MakeInt64( 4, 7, 0, 700 ) ) >= 0 ) // Win9x version
            {                    
                // TODO: find win2k version
                
                // ddraw.dll is the DX7.0 version, so we must be at least DX7.0
                if( pdwDirectXVersionMajor ) *pdwDirectXVersionMajor = 7;
                if( pdwDirectXVersionMinor ) *pdwDirectXVersionMinor = 0;
                if( pcDirectXVersionLetter ) *pcDirectXVersionLetter = TEXT(' ');
                bFound = true;
            }
        }

        // Switch off the dinput version
        _tcscpy( szFile, szPath );
        _tcscat( szFile, TEXT("\\dinput.dll") );
        if( SUCCEEDED( GetFileVersion( szFile, &llFileVersion ) ) )
        {
            if( CompareLargeInts( llFileVersion, MakeInt64( 4, 7, 0, 716 ) ) >= 0 ) // Win9x version
            {                    
                // ddraw.dll is the DX7.0 version, so we must be at least DX7.0a
                if( pdwDirectXVersionMajor ) *pdwDirectXVersionMajor = 7;
                if( pdwDirectXVersionMinor ) *pdwDirectXVersionMinor = 0;
                if( pcDirectXVersionLetter ) *pcDirectXVersionLetter = TEXT('a');
                bFound = true;
            }
        }

        // Switch off the ddraw version
        _tcscpy( szFile, szPath );
        _tcscat( szFile, TEXT("\\ddraw.dll") );
        if( SUCCEEDED( GetFileVersion( szFile, &llFileVersion ) ) )
        {
            if( (HIWORD(llFileVersion.HighPart) == 4 && CompareLargeInts( llFileVersion, MakeInt64( 4, 8, 0, 400 ) ) >= 0) || // Win9x version
                (HIWORD(llFileVersion.HighPart) == 5 && CompareLargeInts( llFileVersion, MakeInt64( 5, 1, 2258, 400 ) ) >= 0) ) // Win2k/WinXP version
            {                    
                // ddraw.dll is the DX8.0 version, so we must be at least DX8.0 or DX8.0a (no redist change)
                if( pdwDirectXVersionMajor ) *pdwDirectXVersionMajor = 8;
                if( pdwDirectXVersionMinor ) *pdwDirectXVersionMinor = 0;
                if( pcDirectXVersionLetter ) *pcDirectXVersionLetter = TEXT(' ');
                bFound = true;
            }
        }

        _tcscpy( szFile, szPath );
        _tcscat( szFile, TEXT("\\d3d8.dll"));
        if( SUCCEEDED( GetFileVersion( szFile, &llFileVersion ) ) )
        {
            if( (HIWORD(llFileVersion.HighPart) == 4 && CompareLargeInts( llFileVersion, MakeInt64( 4, 8, 1, 881 ) ) >= 0) || // Win9x version
                (HIWORD(llFileVersion.HighPart) == 5 && CompareLargeInts( llFileVersion, MakeInt64( 5, 1, 2600, 881 ) ) >= 0) ) // Win2k/WinXP version
            {                    
                // d3d8.dll is the DX8.1 version, so we must be at least DX8.1
                if( pdwDirectXVersionMajor ) *pdwDirectXVersionMajor = 8;
                if( pdwDirectXVersionMinor ) *pdwDirectXVersionMinor = 1;
                if( pcDirectXVersionLetter ) *pcDirectXVersionLetter = TEXT(' ');
                bFound = true;
            }

            if( (HIWORD(llFileVersion.HighPart) == 4 && CompareLargeInts( llFileVersion, MakeInt64( 4, 8, 1, 901 ) ) >= 0) || // Win9x version
                (HIWORD(llFileVersion.HighPart) == 5 && CompareLargeInts( llFileVersion, MakeInt64( 5, 1, 2600, 901 ) ) >= 0) ) // Win2k/WinXP version
            {                    
                // d3d8.dll is the DX8.1a version, so we must be at least DX8.1a
                if( pdwDirectXVersionMajor ) *pdwDirectXVersionMajor = 8;
                if( pdwDirectXVersionMinor ) *pdwDirectXVersionMinor = 1;
                if( pcDirectXVersionLetter ) *pcDirectXVersionLetter = TEXT('a');
                bFound = true;
            }
        }

        _tcscpy( szFile, szPath );
        _tcscat( szFile, TEXT("\\mpg2splt.ax"));
        if( SUCCEEDED( GetFileVersion( szFile, &llFileVersion ) ) )
        {
            if( CompareLargeInts( llFileVersion, MakeInt64( 6, 3, 1, 885 ) ) >= 0 ) // Win9x/Win2k/WinXP version
            {                    
                // quartz.dll is the DX8.1b version, so we must be at least DX8.1b
                if( pdwDirectXVersionMajor ) *pdwDirectXVersionMajor = 8;
                if( pdwDirectXVersionMinor ) *pdwDirectXVersionMinor = 1;
                if( pcDirectXVersionLetter ) *pcDirectXVersionLetter = TEXT('b');
                bFound = true;
            }
        }

        _tcscpy( szFile, szPath );
        _tcscat( szFile, TEXT("\\dpnet.dll"));
        if( SUCCEEDED( GetFileVersion( szFile, &llFileVersion ) ) )
        {
            if( (HIWORD(llFileVersion.HighPart) == 4 && CompareLargeInts( llFileVersion, MakeInt64( 4, 9, 0, 134 ) ) >= 0) || // Win9x version
                (HIWORD(llFileVersion.HighPart) == 5 && CompareLargeInts( llFileVersion, MakeInt64( 5, 2, 3677, 134 ) ) >= 0) ) // Win2k/WinXP version
            {                    
                // dpnet.dll is the DX8.2 version, so we must be at least DX8.2
                if( pdwDirectXVersionMajor ) *pdwDirectXVersionMajor = 8;
                if( pdwDirectXVersionMinor ) *pdwDirectXVersionMinor = 2;
                if( pcDirectXVersionLetter ) *pcDirectXVersionLetter = TEXT(' ');
                bFound = true;
            }
        }

        _tcscpy( szFile, szPath );
        _tcscat( szFile, TEXT("\\d3d9.dll"));
        if( SUCCEEDED( GetFileVersion( szFile, &llFileVersion ) ) )
        {
            // File exists, but be at least DX9
            if( pdwDirectXVersionMajor ) *pdwDirectXVersionMajor = 9;
            if( pdwDirectXVersionMinor ) *pdwDirectXVersionMinor = 0;
            if( pcDirectXVersionLetter ) *pcDirectXVersionLetter = TEXT(' ');
            bFound = true;
        }
    }

    if( !bFound )
    {
        // No DirectX installed
        if( pdwDirectXVersionMajor ) *pdwDirectXVersionMajor = 0;
        if( pdwDirectXVersionMinor ) *pdwDirectXVersionMinor = 0;
        if( pcDirectXVersionLetter ) *pcDirectXVersionLetter = TEXT(' ');
    }

    return S_OK;
}




//-----------------------------------------------------------------------------
// Name: GetFileVersion()
// Desc: Returns ULARGE_INTEGER with a file version of a file, or a failure code.
//-----------------------------------------------------------------------------
HRESULT GetFileVersion( TCHAR* szPath, ULARGE_INTEGER* pllFileVersion )
{   
    if( szPath == NULL || pllFileVersion == NULL )
        return E_INVALIDARG;

    DWORD dwHandle;
    UINT  cb;
    cb = GetFileVersionInfoSize( szPath, &dwHandle );
    if (cb > 0)
    {
        BYTE* pFileVersionBuffer = new BYTE[cb];
        if( pFileVersionBuffer == NULL )
            return E_OUTOFMEMORY;

        if (GetFileVersionInfo( szPath, 0, cb, pFileVersionBuffer))
        {
            VS_FIXEDFILEINFO* pVersion = NULL;
            if (VerQueryValue(pFileVersionBuffer, TEXT("\\"), (VOID**)&pVersion, &cb) && 
                pVersion != NULL) 
            {
                pllFileVersion->HighPart = pVersion->dwFileVersionMS;
                pllFileVersion->LowPart  = pVersion->dwFileVersionLS;
                delete[] pFileVersionBuffer;
                return S_OK;
            }
        }

        delete[] pFileVersionBuffer;
    }

    return E_FAIL;
}




//-----------------------------------------------------------------------------
// Name: MakeInt64()
// Desc: Returns a ULARGE_INTEGER where a<<48|b<<32|c<<16|d<<0
//-----------------------------------------------------------------------------
ULARGE_INTEGER MakeInt64( WORD a, WORD b, WORD c, WORD d )
{
    ULARGE_INTEGER ull;
    ull.HighPart = MAKELONG(b,a);
    ull.LowPart = MAKELONG(d,c);
    return ull;
}




//-----------------------------------------------------------------------------
// Name: CompareLargeInts()
// Desc: Returns 1 if ullParam1 > ullParam2
//       Returns 0 if ullParam1 = ullParam2
//       Returns -1 if ullParam1 < ullParam2
//-----------------------------------------------------------------------------
int CompareLargeInts( ULARGE_INTEGER ullParam1, ULARGE_INTEGER ullParam2 )
{
    if( ullParam1.HighPart > ullParam2.HighPart )
        return 1;
    if( ullParam1.HighPart < ullParam2.HighPart )
        return -1;

    if( ullParam1.LowPart > ullParam2.LowPart )
        return 1;
    if( ullParam1.LowPart < ullParam2.LowPart )
        return -1;

    return 0;
}