NAME

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.

dx

dy

Specify the x and y coordinates, which define the amount you want to move or shrink 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 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