The following code demonstrates how to add Windows Media support to the ltmmCapture Object.
// declare the windows media certificate creation function
HRESULT STDMETHODCALLTYPE WMCreateCertificate( IUnknown** pUnkCert );
// link to the stub library
#pragma comment(lib, "wmstub.lib")
void AddWindowsMediaSupportCaptureObjectExample ( void )
{
HRESULT hr;
IltmmCapture* pCapture = NULL;
IUnknown* punkCert = NULL;
// initialize the COM library
hr = CoInitialize(NULL);
if(FAILED(hr))
goto error;
// create the capture object
hr = CoCreateInstance(&CLSID_ltmmCapture, NULL, CLSCTX_INPROC_SERVER, &IID_IltmmCapture, (void**) &pCapture);
if(FAILED(hr))
goto error;
// create a windows media certificate
hr = WMCreateCertificate(&punkCert);
if(SUCCEEDED(hr))
{
// assign the certificate to the capture object
IltmmCapture_put_WMCertificate (pCapture, punkCert);
IUnknown_Release(punkCert);
}
error: // clean up
if(pCapture)
IUnknown_Release(pCapture);
CoUninitialize();
}
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