XEmptyRegion(3X11) XLIB FUNCTIONS XEmptyRegion(3X11)
NAME
XEmptyRegion, XEqualRegion, XPointInRegion, XRectInRegion -
determine if regions are empty or equal
SYNTAX
Bool XEmptyRegion(Region r);
Bool XEqualRegion(Region r1, Region r2);
Bool XPointInRegion(Region r, int x, int y);
int XRectInRegion(Region r, int x, int y, unsigned int
width, unsigned int 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 rec-
tangle 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
XFree86 Version 4.5.0 1