DrawingModeView
DrawingModeView(BRect frame);
virtual ~DrawingModeView();
DrawingModeView * fView;
fView = new DrawingModeView(frame.OffsetToSelf(0, 0));
DrawingModeView::DrawingModeView(BRect frame)
DrawingModeView::~DrawingModeView()
DrawingModeView::Draw(BRect updateRect)