Fill Patterns for Get/SetFillStyle
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            EmptyFill       = 0;   Fills area in background color
            SolidFill       = 1;   Fills area in solid fill color
            LineFill        = 2;   --- fill
            LtSlashFill     = 3;   /// fill
            SlashFill       = 4;   /// fill with thick lines
            BkSlashFill     = 5;   \\\ fill with thick lines
            LtBkSlashFill   = 6;   \\\ fill
            HatchFill                       = 7;   Light Hatch fill
            XHatchFill      = 8;   Heavy cross-hatch fill
            InterLeaveFill  = 9;   Interleaving fill
            WideDotFill     = 10;  Widely spaced dot fill
            CloseDotFill    = 11;  Closely spaced fill