GETDOTCOLOR                  Get Pixel Color                         pp 174

 Syntax:  GetDotColor (X,Y) ;

 Type:    Integer

 Form:    Extended Graphics Function

 Purpose: Returns color value of graphics pixel at X,Y coordinates.

 Notes:   Requires {$I Graph.P} include file in the source file.
          Values 0..3 may be returned in 320x200 mode graphics,
          or 0..1 in 640x200 mode.  If X,Y is outside the active
          window, then -1 is returned.


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 Usage:
          {$I Graph.P}                     { Extended graphics support }
       VAR
          X,Y    : Integer            ;    { Row, Col coordinates      }
          IntVar : Integer            ;    { Color value               }


       BEGIN
          GraphColorMode              ;    { Set 320x200 graphics mode }
          IntVar := GetDotColor (X,Y) ;    { Read the pixel color      }
       END.