# File rbSnack/tkSnackUtil.rb, line 167
    def drawGraph
      w = self.width
      h = self.height
      @viewPort=[50,30,w-20,h-30]
      bc, gc =@borderColor, @graphColor
      TkcRectangle.new(self,0,0,self.width,self.height ) { fill bc }         
      TkcRectangle.new(self, @viewPort[0], @viewPort[1], 
                         @viewPort[2], @viewPort[3]) { fill gc} 
      drawHorzLabels 
      drawVertLabels 
      theTitle=title
      TkcText.new(self,150,15){text theTitle ; fill 'black'} if theTitle!=nil
    end