本文整理汇总了C++中CComPtr::ActivateObject方法的典型用法代码示例。如果您正苦于以下问题：C++ CComPtr::ActivateObject方法的具体用法？C++ CComPtr::ActivateObject怎么用？C++ CComPtr::ActivateObject使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类CComPtr的用法示例。
在下文中一共展示了CComPtr::ActivateObject方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: CreateRendererForStream
// Create a renderer for the media type on the given stream descriptor
HRESULT CTedMediaFileRenderer::CreateRendererForStream(IMFStreamDescriptor* pSD, IMFTopologyNode** ppRendererNode)
{
HRESULT hr;
CComPtr<IMFMediaTypeHandler> spMediaTypeHandler;
CComPtr<IMFActivate> spRendererActivate;
CComPtr<IMFMediaSink> spRendererSink;
CComPtr<IMFStreamSink> spRendererStreamSink;
IMFTopologyNode* pRendererNode;
GUID gidMajorType;
IFC( MFCreateTopologyNode(MF_TOPOLOGY_OUTPUT_NODE, &pRendererNode) );
IFC( pSD->GetMediaTypeHandler( &spMediaTypeHandler ) );
IFC( spMediaTypeHandler->GetMajorType( &gidMajorType ) );
if(MFMediaType_Audio == gidMajorType)
{
IFC( MFCreateAudioRendererActivate(&spRendererActivate) );
IFC( spRendererActivate->ActivateObject(IID_IMFMediaSink, (void**) &spRendererSink) );
IFC( spRendererSink->GetStreamSinkById(0, &spRendererStreamSink) );
IFC( pRendererNode->SetObject(spRendererStreamSink) );
}
else if(MFMediaType_Video == gidMajorType)
{
HWND hVideoWindow;
IFC( m_spVideoWindowHandler->GetVideoWindow((LONG_PTR*) &hVideoWindow) );
IFC( MFCreateVideoRendererActivate(hVideoWindow, &spRendererActivate) );
IFC( spRendererActivate->ActivateObject(IID_IMFMediaSink, (void**) &spRendererSink) );
IFC( spRendererSink->GetStreamSinkById(0, &spRendererStreamSink) );
IFC( pRendererNode->SetObject(spRendererStreamSink) );
}
else
{
// Do not have renderers for any other major types
}
*ppRendererNode = pRendererNode;
Cleanup:
return hr;
}