xcreateregion(3x11) [redhat man page]

XCreateRegion(3X11)						  XLIB FUNCTIONS					       XCreateRegion(3X11)

NAME

       XCreateRegion, XSetRegion, XDestroyRegion - create or destroy regions

SYNTAX

       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.

SEE ALSO

       XEmptyRegion(3X11), XIntersectRegion(3X11)
       Xlib - C Language X Interface

X Version 11							    Release 6.6 					       XCreateRegion(3X11)

XEmptyRegion(3X11)						  XLIB FUNCTIONS						XEmptyRegion(3X11)

NAME

       XEmptyRegion, XEqualRegion, XPointInRegion, XRectInRegion - determine if regions are empty or equal

SYNTAX

       Bool XEmptyRegion(r)
	     Region r;

       Bool XEqualRegion(r1, r2)
	     Region r1, r2;

       Bool XPointInRegion(r, x, y)
	     Region r;
	     int x, y;

       int XRectInRegion(r, x, y, width, height)
	     Region r;
	     int x, y;
	     unsigned int width, height;

ARGUMENTS

       r	 Specifies the region.

       r1
       r2	 Specify the two regions.

       width
       height	 Specify the width and height, which define the rectangle.  or the coordinates of the upper-left corner of the rectangle

       x
       y	 Specify the x and y coordinates, which define the point.

DESCRIPTION

       The XEmptyRegion function returns True if the region is empty.

       The XEqualRegion function returns True if the two regions have the same offset, size, and shape.

       The XPointInRegion function returns True if the point (x, y) is contained in the region r.

       The XRectInRegion function returns RectangleIn if the rectangle is entirely in the specified region, RectangleOut if the rectangle is
       entirely out of the specified region, and RectanglePart if the rectangle is partially in the specified region.

SEE ALSO

       XCreateRegion(3X11), XIntersectRegion(3X11)
       Xlib - C Language X Interface

X Version 11							    Release 6.6 						XEmptyRegion(3X11)