Inside Macintosh: QuickTime Components /

Chapter 5 - Sequence Grabber Components / Sequence Grabber Components Reference

Sequence Grabber Component Functions / Working With Channel Characteristics

SGGetChannelBounds

The SGGetChannelBounds function allows you to determine a channel's display boundary rectangle.

pascal ComponentResult SGGetChannelBounds (SGChannel c,
                                           Rect *bounds);

c

Specifies the reference that identifies the channel for this operation. You obtain this reference from the SGNewChannel function, described on page 5-29.

bounds

Contains a pointer to a rectangle structure that is to receive information about the channel's display boundary rectangle. This rectangle is defined in the graphics world that you establish when you call the SGSetGWorld function.

DESCRIPTION

You set the boundary rectangle by calling the SGSetChannelBounds function, which is described in the previous section. This rectangle is defined in the graphics world that you establish by calling the SGSetGWorld function, described on page 5-27.

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