Inside Macintosh: QuickTime Components /

Chapter 8 - Video Digitizer Components / Video Digitizer Components Reference

Video Digitizer Component Functions / Selectively Displaying Video

VDGetMaskPixMap

The VDGetMaskPixMap function allows applications to retrieve the pixel map data for a component's blend mask. This function is supported only by digitizer components that support blend masks.

pascal VideoDigitizerError VDGetMaskPixMap
                                  (VideoDigitizerComponent ci,
                                     PixMapHandle maskPixMap);

ci

Specifies the video digitizer component for the request. Applications obtain this reference from the Component Manager's OpenComponent function.

maskPixMap

Contains a handle to a pixel map. The video digitizer component returns the pixel map data for its blend mask into the pixel map specified by this parameter. The video digitizer component resizes the handle as appropriate. Your application is responsible for disposing of this handle.

RESULT CODES

noErr	0	No error
digiUnimpErr	-2201	Function not supported

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