IVMRMixerBitmap::GetAlphaBitmapParameters method (strmif.h)

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

Syntax

HRESULT GetAlphaBitmapParameters(
  [out] PVMRALPHABITMAP pBmpParms
);

Parameters

[out] pBmpParms

A pointer to a VMRALPHABITMAP structure that receives the bitmap, information about the blending values, and the location to blend it.

Return value

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

Return code Description
E_POINTER
pBmpParms is invalid.
VFW_E_WRONG_STATE
The mixer has not been loaded.

Requirements

   
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

IVMRMixerBitmap Interface

IVMRMixerBitmap::SetAlphaBitmap

Using the Video Mixing Renderer

Video Mixing Renderer Filter 7