ET++: A sample application: iconedit

Every ET++ application which uses the view metaphore must subclass the View class. FatIconView is the iconedit view class which shows an enlarged view of the bitmap. This method handles a left button click. Like other event handling methods in ET++, this method returns a Command, which is executed later. 

Command *FatIconView::DoLeftButtonDownCommand(Point lp, Token t, int)
{
	if (tool == 0 && PixelToRect(selection).ContainsPoint(lp)) {
		Rectangle oldsel= selection;
		return new BitMover(this, oldsel, t.Flags & eFlgShiftKey);
	}

	[ ... handle resize ... ]

	switch (tool) {
	case 0:
		return new BitSelector(this);
	case 1:
		return new BitPainter(this, PointToPixel(lp));
	case 2:
		return new LineCommand(this);
	case 3:
		return new RectCommand(this, FALSE, "Stroke Rect");
	[ ... handle other tool clicks ... ]
	}
	return gNoChanges;
}

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