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BitMapToRegion |
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Header: | Quickdraw.h | Carbon status: | Supported | |
Converts a bitmap or pixel map to a region.
OSErr BitMapToRegion ( region, const BitMap *bMap );
A handle to a region to hold the converted BitMap or PixMap structure. This must be a valid region handle created with the NewRgn function. The old region contents are lost.
A pointer to a BitMap or PixMap structure to be converted. If you supply a PixMap structure, its pixel depth must be 1. The BitMapToRegion function converts this structure to a region. You would generally use this region later for drawing operations.
A result code.
The BitMapToRegion function converts a given BitMap or PixMap record to a region. You would generally use this region later for drawing operations. The region parameter must be a valid region handle created with the NewRgn function (described in the chapter QuickDraw Drawing). The old region contents are lost.
The bMap parameter may be either a BitMap or PixMap record. If you pass a PixMap record, its pixel depth must be 1.
Supported in Carbon. Available in Carbon 1.0.2 and later when running Mac OS 8.1 or later.
© 2000 Apple Computer, Inc. (Last Updated 6/30/2000)