All Databases Inside Mac - Basic Toolbox

BitMapToRegion

Convert bitmaps or pixel maps to regions

#include <Quickdraw.h> Color QuickDraw

OSErr BitMapToRegion ( region, bMap);

RgnHandle region ; a valid region handle

BitMap *bMap; a bitmap or pixel map record

returns an error code.

You can convert bitmaps or pixel maps to regions using the

BitMapToRegion function.

region must be a valid region handle created with a NewRgn function. The

old region contents are lost.

bMap may either be a bitmap or pixel map record. If you pass a pixel map

record, its pixel size (bits per pixel) must be 1.

Returns: an Error Code.

pixmapTooDeepErr (-148) Pixel map record is deeper than 1 bit per pixel

rgnTooBigErr (-500) Bitmap would convert to a region greater than 64 KB

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