FillOval
FillOval Fill an oval with a specified pattern
#include <Quickdraw.h> Quickdraw
void FillOval( theRect, thePat );
Rect *theRect ; rectangle defining oval's position and size
PatPtr thePat ; address of an 8-byte Pattern structure
FillOval fills all pixels in an oval with a specified pattern. The transfer
mode is patCopy, overwriting all bits within the elliptical area.
theRect is the address of an 8-byte Rect structure, in local coordinates.
thePat is the address of an 8-byte Pattern structure. It may be one of the
global patterns (black, white, gray, ltGray, or dkGray), or a pattern
read from a resource, or a pattern created by the application. See
PenPat for examples of obtaining and creating a pattern.
Returns: none

Notes: The pattern overwrites the interior of the elliptical area, including the
output of any previously- executed "frame" operation.
FillOval doesn't change the pen position. The GrafPort's pen pattern, pen
mode, and background pattern are ignored.
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.