InvertRgn

Invert all pixels enclosed by a region

#include <Quickdraw.h> Quickdraw

void InvertRgn(theRgn );

RgnHandle theRgn ; handle of region to invert

InvertRgn inverts all pixels enclosed by the specified region. All black

pixels are set to white and vice versa.

theRgn is the handle of a region in the local GrafPort.

Notes: For "old model" color, the output result of all Invertxxx functions

depends upon the device being used.

InvertRgn doesn't change the pen position.

As with all Quickdraw drawing, the output is clipped to the intersection of

the current GrafPort's bitMap boundary rectangle, the port rectangle,

clipping region, and visible region.

Referenced by (2):