X Version 11 (Release 6.1)

XCreateRegion(X3xlib)

XCreateRegion -- create or destroy regions

Synopsis

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

   XDestroyRegion(r)
         Region r;

Arguments

display: Specifies the connection to the X server.
gc: Specifies the GC.
r: 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.

References

XEmptyRegion(X3xlib), XIntersectRegion(X3xlib)
Xlib - C Language X Interface