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XIntersectRegion(3)


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



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