IAMOverlayFX::GetOverlayFX method (strmif.h)

The GetOverlayFX method retrieves the effects currently applied to the overlay surface, if any. The application can call this method while the filter graph is running.


  DWORD *lpdwOverlayFX



Pointer a variable that receives a value indicating which effects, if any, are currently applied to the overlay surface. The value is a logical combination of flags from the AMOVERLAYFX enumeration.

Return value

Returns an HRESULT value that depends on the implementation of the interface. The DirectShow implementation returns S_OK if successful, or E_POINTER to indicate a NULL pointer argument.


Minimum supported client Windows XP [desktop apps only]
Minimum supported server Windows Server 2003 [desktop apps only]
Target Platform Windows
Header strmif.h (include Dshow.h)
Library Strmiids.lib

See also

Error and Success Codes

IAMOverlayFX Interface