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XPolygonRegion, XClipBox
- generate regions 
- Region XPolygonRegion(XPoint points[], int n, int
- fill_rule);  
- int XClipBox(Region r, XRectangle *rect_return);  
Specifies
the fill-rule you want to set for the specified GC. You can pass  EvenOddRule
  or WindingRule.   
Specifies the number of points in the polygon.  
Specifies
an array of points. 
Specifies the region. 
Returns the smallest enclosing
rectangle. 
The XPolygonRegion   function returns a region for
the polygon defined by the points array. For an explanation of fill_rule,
see XCreateGC.   
The XClipBox   function returns the smallest rectangle
enclosing the specified region. 
XCreateGC(3X11)
, XDrawPoint(3X11)
,
XDrawRectangle(3X11)
 
Xlib - C Language X Interface 
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