VMRALPHABITMAP 9074 3rdparty/include/dshow/strmif.h virtual HRESULT WINAPI SetAlphaBitmap(const VMRALPHABITMAP *pBmpParms) = 0; VMRALPHABITMAP 9084 3rdparty/include/dshow/strmif.h HRESULT (WINAPI *SetAlphaBitmap)(IVMRMixerBitmap *This,const VMRALPHABITMAP *pBmpParms); VMRALPHABITMAP 9101 3rdparty/include/dshow/strmif.h HRESULT WINAPI IVMRMixerBitmap_SetAlphaBitmap_Proxy(IVMRMixerBitmap *This,const VMRALPHABITMAP *pBmpParms);