Microsoft DirectX 9.0 |
To unregister a filter, implement the DllUnregisterServer function. Within this function, call the DirectShow AMovieDllRegisterServer2 function with a value of FALSE. If you called IFilterMapper2::RegisterFilter when you registered the filter, call the IFilterMapper2::UnregisterFilter method here.
The following example shows how to unregister a filter:
STDAPI DllUnregisterServer()
{
HRESULT hr;
IFilterMapper2 *pFM2 = NULL;
hr = AMovieDllRegisterServer2(FALSE);
if (FAILED(hr))
return hr;
hr = CoCreateInstance(CLSID_FilterMapper2, NULL, CLSCTX_INPROC_SERVER,
IID_IFilterMapper2, (void **)&pFM2);
if (FAILED(hr))
return hr;
hr = pFM2->UnregisterFilter(&CLSID_VideoCompressorCategory,
g_wszName, CLSID_SomeFilter);
pFM2->Release();
return hr;
}