To draw on a window from outside {\bf OnPaint}, construct a \helpref{wxClientDC}{wxclientdc} object.
To draw on the whole window including decorations, construct a \helpref{wxWindowDC}{wxwindowdc} object
To draw on a window from outside {\bf OnPaint}, construct a \helpref{wxClientDC}{wxclientdc} object.
To draw on the whole window including decorations, construct a \helpref{wxWindowDC}{wxwindowdc} object