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XCreateRegion, XSetRegion, XDestroyRegion - create or destroy regions
Region
XCreateRegion()
XSetRegion(display, gc, r)
Display *display;
GC gc;
Region r;
XDestroyRegion(r)
Region r;
Specifies the connection to the X server.
Specifies the GC.
Specifies the region.
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.
XEmptyRegion(3X11), XIntersectRegion(3X11)
Xlib -- C Language X Interface