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