fixed some tweeks in suduko-chb for OS-X

Author: ChrisBarker-NOAA

sudoku-chb.py

@@ -146,7 +146,7 @@ def test_PuzzleGrid():
 class Grid:
     def __init__(self, w, h):
         size = min(w,h)
-        self.d = d = (size - 20) / 9
+        self.d = d = max( 2, (size - 20) / 9 )# make  sure we don't get zero...
         self.x0 = (w - (self.d * 9)) / 2
         self.y0 = (h - (self.d * 9)) / 2
         self.font_size = int(11 * d/16.0)
@@ -212,7 +212,7 @@ def Draw(self, dc):
         # draw the background:
         dc.SetBackground(wx.Brush(self.GetBackgroundColour()))
         dc.Clear()
-        dc.SetBrush(wx.Brush(wx.Color(128,128,255)))
+        dc.SetBrush(wx.Brush(wx.Colour(128,128,255)))
         dc.SetPen(wx.TRANSPARENT_PEN)
         dc.DrawRectangle(x0, y0, d*9, d*9 )