CPersistStream.IsDirty method
[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
Indicates whether the object has changed since it was last saved to its current stream.
Syntax
HRESULT IsDirty();
Parameters
This method has no parameters.
Return value
Returns S_OK if the filter needs saving and S_FALSE if it does not need saving.
Remarks
This member function implements the IPersistStream::IsDirty method.
Requirements
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