C Language and Libraries Help (clang.hlp) (Table of Contents; Topic list)
Control Argument for Filled Figures
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─────Run-Time Library───────────────────────────────────────────────────────
 
  Constant:  _GBORDER, _GFILLINTERIOR
 
  Include:   <graph.h>
 
  Context:   _ellipse, _rectangle, _polygon, _pie
 
  Synopsis:  Specifies whether the figure is to be filled.
 
     The constants and their corresponding actions are as follows:
 
     Constant           Action
 
     _GBORDER           Do not fill the figure
 
     _GFILLINTERIOR     Fill the figure, using a scanfill algorithm,
                        with the current color and fill mask
                                    -♦-