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