X Version 11 (1 September 1988) XIntersectRegion(XS)
NAME
XIntersectRegion, XUnionRegion, XUnionRectWithRegion,
XSubtractRegion, XXorRegion, XOffsetRegion, XShrinkRegion -
region arthmetic
SYNTAX
XIntersectRegion(sra, srb, dr_return)
Region sra, srb, dr_return;
XUnionRegion(sra, srb, dr_return)
Region sra, srb, dr_return;
XUnionRectWithRegion(rectangle, src_region,
dest_region_return)
XRectangle *rectangle;
Region src_region;
Region dest_region_return;
XSubtractRegion(sra, srb, dr_return)
Region sra, srb, dr_return;
XXorRegion(sra, srb, dr_return)
Region sra, srb, dr_return;
XOffsetRegion(r, dx, dy)
Region r;
int dx, dy;
XShrinkRegion(r, dx, dy)
Region r;
int dx, 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(XS), XEmptyRegion(XS),
Xlib - C Language X Interface
(printed 2/12/90) (1 September 1988) XIntersectRegion(XS)