Inside Macintosh: QuickTime Components /

Chapter 6 - Sequence Grabber Channel Components / Sequence Grabber Channel Components Reference

Functions / Configuration Functions for Video Channel Components

SGAlignChannelRect

The sequence grabber calls your SGAlignChannelRect function in order to determine whether your channel prefers to draw at a particular screen location.

pascal ComponentResult SGAlignChannelRect (SGChannel c, Rect *r);

c

Identifies the connection to your channel.

r

Contains a pointer to a rectangle. On entry, this rectangle contains coordinates at which the sequence grabber would like to draw your captured video image. If your component can draw more efficiently or at a higher frame rate at a different location, update the contents of this rectangle to reflect where you would prefer to draw. The rectangle will be passed in with global, not local, coordinates.

DESCRIPTION

The sequence grabber uses your SGAlignChannelRect function to determine the best alignment for your captured image.

RESULT CODE

badComponentSelector

0x80008002

Function not supported

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