XIntersectRegion(3X11)

NAME
       XIntersectRegion, XUnionRegion, XUnionRectWithRegion,
       XSubtractRegion, XXorRegion, XOffsetRegion, XShrinkRegion
       - region arithmetic

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(3X11) XDrawRectangle(3X11) XEmptyRe- 
       gion(3X11) 
       Xlib - C Language X Interface