This is another simple class that has been inside ssUltimate for quite a long time now. But I designed this solely for the need of TitleBarX when I experimented on creating a control box that is purely made of shapes.
However, recently I am changing my forms' appearances again and I now favor a form with no titlebar and border that is run maximized. And while users of my app know they can always press Esc key to exit any of my forms, I still want an additional way for them to close it via a mouse.