XIntersectRegion(3X11)        SDK X11 R4.11MU05       XIntersectRegion(3X11)


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

SYNTAX
       XIntersectRegion(sra, srb, drreturn)
             Region sra, srb, drreturn;

       XUnionRegion(sra, srb, drreturn)
             Region sra, srb, drreturn;

       XUnionRectWithRegion(rectangle, srcregion, destregionreturn)
            XRectangle *rectangle;
            Region srcregion;
            Region destregionreturn;

       XSubtractRegion(sra, srb, drreturn)
             Region sra, srb, drreturn;

       XXorRegion(sra, srb, drreturn)
             Region sra, srb, drreturn;

       XOffsetRegion(r, dx, dy)
             Region r;
             int dx, dy;

       XShrinkRegion(r, dx, dy)
             Region r;
             int dx, dy;

ARGUMENTS
       destregionreturn
                 Returns the destination region.

       drreturn 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.

       srcregion
                 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), XEmptyRegion(3X11)
       Xlib - C Language X Interface


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