Name

Syntax

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 Dy 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

Table of Contents

• Name
• Syntax
• Arguments
• Description
• See Also