GfxRectangle

Lowlevel graphics 
SYNTAX  GfxRectangle( x1, y1, x2, y2 ) 
RETURNS  NOTHING 
FUNCTION  Draws a rectangle using the current pen. The interior of the rectangle is filled using the current brush.
Parameters
NOTE: This is LOWLEVEL graphic function. To learn more about lowlevel graphic functions please read TUTORIAL: Using lowlevel graphics. 
EXAMPLE  GfxRectangle( 10, 10, 30, 30 ) 
SEE ALSO  GfxSelectPen() function , GfxSelectSolidBrush() function 
The GfxRectangle function is used in the following formulas in AFL online library:
See updated/extended version online.