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IVMRMixerBitmap::GetAlphaBitmapParameters

  • Artigo
 
Microsoft DirectShow 9.0

IVMRMixerBitmap::GetAlphaBitmapParameters

The GetAlphaBitmapParameters method retrieves a copy of the current image and related blending parameters.

Syntax

  HRESULT GetAlphaBitmapParameters(

  
  PVMRALPHABITMAP
  
  pBmpParms

  );

Parameters

pBmpParms

[out]  Pointer to a VMRALPHABITMAP structure that receives the bitmap, information about the blending values, and the location to blend it.

Return Values

If the method succeeds, it returns S_OK. If it fails, it returns an error code.

Error Code Description
E_POINTER pBmpParms is invalid.
VFW_E_WRONG_STATE The mixer has not been loaded.

Requirements

Header: Declared in Strmif.h; include Dshow.h.

Library: Use Strmiids.lib.

See Also