Step 10: Shut Down DirectMusic

Closing down DirectMusic is a matter of clearing the loader cache, stopping the performance, releasing all the objects that have been created, and finally dereferencing COM (remember, every call to CoInitialize must have a matching call to CoUninitialize).

The following function performs the necessary cleanup in Donuts.cpp.

void CleanUpDMusic()
{
    if (gpLoader)
    {
        gpLoader->ClearCache(GUID_DirectMusicAllTypes);
        gpLoader->Release();
    }
 
    if (gpComposer)
    {
        gpComposer->Release();
    }
 
    if (gpIntroTemplate)
    {
        gpIntroTemplate->Release();
    }
 
    if (gpGameTemplate)
    {
        gpGameTemplate->Release();
    }
 
    for (short n = 0; n < NUM_STYLES; n++)
    {
        if (gapShieldBand[n])
        {
            gapShieldBand[n]->Unload(gpPerformance);
            gapShieldBand[n]->Release();
        }
        if (gapDefaultBand[n])
        {
            gapDefaultBand[n]->Unload(gpPerformance);
            gapDefaultBand[n]->Release();
        }
        if (gapShieldSegment[n])
        {
            gapShieldSegment[n]->Release();
        }
 
        if (gapDefaultSegment[n])
        {
            gapDefaultSegment[n]->Release();
        }
 
        if (gapStyle[n])
        {
            gapStyle[n]->Release();
        }
 
        for (short m = 0; m < NUM_CHORDMAP; m++)
        {
            if (gapChordMap[n][m])
            {
                gapChordMap[n][m]->Release();
            }
        }
 
        for (m = 0; m < NUM_MOTIFS; m++)
        {
            if (gapMotif[n][m])
            {
                gapMotif[n][m]->Release();
            }
        }
    }
 
    if (gpPerformance)
    {
        gpPerformance->Stop( NULL, NULL, 0, 0 );
        gpPerformance->CloseDown();
        gpPerformance->Release();
    }
        
    for (n = 0; n < NUM_SEGMENTS; n++)
    {
        if (gapSegment[n])
        {
            gapSegment[n]->Release();
        }
    }
 
    if (gpDirectMusic)
    {
        gpDirectMusic->Release();
    }
 
    CoUninitialize();
}

 Last updated on Monday, April 12, 2004

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