osf1 man page for xcreateregion

XCreateRegion(3X11)													       XCreateRegion(3X11)

NAME
       XCreateRegion, XSetRegion, XDestroyRegion - create or destroy regions

SYNOPSIS
       Region XCreateRegion()

       XSetRegion(display, gc, r)
	       Display *display;
	       GC gc;
	       Region r;

       XDestroyRegion(r)
	       Region r;

ARGUMENTS
       Specifies the connection to the X server.  Specifies the GC.  Specifies the region.

DESCRIPTION
       The XCreateRegion function creates a new empty region.

       The  XSetRegion	function  sets the clip-mask in the GC to the specified region. The region is specified relative to the drawable's origin.
       The resulting GC clip origin is implementation dependent. Once it is set in the GC, the region can be destroyed.

       The XDestroyRegion function deallocates the storage associated with a specified region.

SEE ALSO
       XEmptyRegion(3X11), XIntersectRegion(3X11)

       Xlib -- C Language X Interface

															       XCreateRegion(3X11)