procedure Refresh; override;
virtual void __fastcall Refresh();
Deselects the Pen, Brush, and Font from the device context.
Call Refresh to return the HDC used by the canvas to a default state. Refresh does not change the values of the Font, Brush, or Pen properties. Calling any of the drawing methods of the canvas after calling Refresh will reselect the Font, Brush, or Pen into the HDC if it is used by the drawing method.