1XIntersectRegion(3)             XLIB FUNCTIONS             XIntersectRegion(3)
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NAME

6       XIntersectRegion,  XUnionRegion, XUnionRectWithRegion, XSubtractRegion,
7       XXorRegion, XOffsetRegion, XShrinkRegion - region arithmetic
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SYNTAX

10       int XIntersectRegion(Region sra, Region srb, Region dr_return);
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12       int XUnionRegion(Region sra, Region srb, Region dr_return);
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14       int  XUnionRectWithRegion(XRectangle  *rectangle,  Region   src_region,
15              Region dest_region_return);
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17       int XSubtractRegion(Region sra, Region srb, Region dr_return);
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19       int XXorRegion(Region sra, Region srb, Region dr_return);
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21       int XOffsetRegion(Region r, int dx, int dy);
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23       int XShrinkRegion(Region r, int dx, int dy);
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ARGUMENTS

26       dest_region_return
27                 Returns the destination region.
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29       dr_return Returns the result of the computation.
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31       dx
32       dy        Specify  the x and y coordinates, which define the amount you
33                 want to move or shrink the specified region.
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35       r         Specifies the region.
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37       rectangle Specifies the rectangle.
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39       sra
40       srb       Specify the two regions with which you want  to  perform  the
41                 computation.
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43       src_region
44                 Specifies the source region to be used.
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DESCRIPTION

47       The XIntersectRegion function computes the intersection of two regions.
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49       The XUnionRegion function computes the union of two regions.
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51       The XUnionRectWithRegion function updates the destination region from a
52       union of the specified rectangle and the specified source region.
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54       The XSubtractRegion function subtracts srb  from  sra  and  stores  the
55       results in dr_return.
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57       The XXorRegion function calculates the difference between the union and
58       intersection of two regions.
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60       The XOffsetRegion function moves the specified region  by  a  specified
61       amount.
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63       The  XShrinkRegion function reduces the specified region by a specified
64       amount.  Positive values shrink the size of the  region,  and  negative
65       values expand the region.
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SEE ALSO

68       XCreateRegion(3), XDrawRectangle(3), XEmptyRegion(3)
69       Xlib - C Language X Interface
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73X Version 11                     libX11 1.6.12             XIntersectRegion(3)
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