XEmptyRegion(3X11) X Version 11 (Release 6.6) 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.
x
y Specify the x and y coordinates, which define the
point or the coordinates of the upper-left corner
of the rectangle.
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
Page 1 (printed 7/20/06)
XEmptyRegion(3X11) X Version 11 (Release 6.6) XEmptyRegion(3X11)XCreateRegion(3X11), XIntersectRegion(3X11)
Xlib - C Language X Interface
Page 2 (printed 7/20/06)
