NAME
XIntersectRegion, XUnionRegion, XUnionRectWithRegion, XSubtractRegion,
XXorRegion, XOffsetRegion, XShrinkRegion - region arithmetic
SYNTAX
int XIntersectRegion(Region sra, Region srb, Region dr_return);
int XUnionRegion(Region sra, Region srb, Region dr_return);
int XUnionRectWithRegion(XRectangle *rectangle, Region src_region,
Region dest_region_return);
int XSubtractRegion(Region sra, Region srb, Region dr_return);
int XXorRegion(Region sra, Region srb, Region dr_return);
int XOffsetRegion(Region r, int dx, int dy);
int XShrinkRegion(Region r, int dx, int dy);
ARGUMENTS
dest_region_return
Returns the destination region.
dr_return Returns the result of the computation. ds Dy move or shrink
dx
dy Specify the x and y coordinates, which define the amount you
want to the specified region.
r Specifies the region.
rectangle Specifies the rectangle.
sra
srb Specify the two regions with which you want to perform the
computation.
src_region
Specifies the source region to be used.
DESCRIPTION
The XIntersectRegion function computes the intersection of two regions.
The XUnionRegion function computes the union of two regions.
The XUnionRectWithRegion function updates the destination region from a
union of the specified rectangle and the specified source region.
The XSubtractRegion function subtracts srb from sra and stores the
results in dr_return.
The XXorRegion function calculates the difference between the union and
intersection of two regions.
The XOffsetRegion function moves the specified region by a specified
amount.
The XShrinkRegion function reduces the specified region by a specified
amount. Positive values shrink the size of the region, and negative
values expand the region.
SEE ALSO
XCreateRegion(3), XDrawRectangle(3), XEmptyRegion(3)
Xlib - C Language X Interface