ViewPortBB,
self._ForegroundHTdc)
ScreenDC.Blit(0, 0, self.PanelSize[0],self.PanelSize[1], dc, 0, 0)
-## wx.GetApp().Yield(True)
# If the canvas is in the middle of a zoom or move, the Rubber Band box needs to be re-drawn
# This seeems out of place, but it works.
if self.PrevRBBox: