RectRgn

Set region to simple rectangle

#include <Quickdraw.h> Quickdraw

void RectRgn(theRgn, theRect );

RgnHandle theRgn ; region to re define; must already exist

Rect *theRect ; rectangle with desired shape and position

RectRgn performs the common operation of defining a rectangular region.

The new region shape is specified by an existing Rect structure.

theRgn is the handle of a region. It must already have been created via

theRect is the address of an 8-byte Rect structure. It describes the shape

and position desired for theRgn .

Notes: This function discards the current structure of a region and sets it to

define a rectangular area. RectRgn is functionally equivalent to:

FrameRect( & theRect);

CloseRgn( theRgn );

Note that you must call NewRgn to allocate the handle's master pointer and

the Region structure data area BEFORE calling RectRgn.

The SetRectRgn function does the same thing, but uses the four

coordinates of the sides of a rectangle as its parameters.

Referenced by (24):