Important: The information in this document is obsolete and should not be used for new development.
EraseRgnTo erase a region, use the
PROCEDURE EraseRgn (rgn: RgnHandle);
- The region to erase.
patCopypattern mode, the
EraseRgnprocedure draws the interior of the region whose handle you pass in the
rgnparameter with the background pattern for the current graphics port.
This procedure leaves the location of the graphics pen unchanged.
EraseRgnprocedure may move or purge memory blocks in the application heap. Your application should not call this procedure at interrupt time.
patCopypattern mode is described in "Boolean Transfer Modes With 1-Bit Pixels" beginning on page 3-7.