XEmptyRegion(3X11) X11R5 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 function returns if the region is empty.
The function returns if the two regions have the same offset, size, and
shape.
The function returns if the point (x, y) is contained in the region r.
The function returns if the rectangle is entirely in the specified
region, if the rectangle is entirely out of the specified region, and
if the rectangle is partially in the specified region.
SEE ALSOXCreateRegion(3X11), XIntersectRegion(3X11)
Xlib - C Language X Interface
XEmptyRegion(3X11)
