Any games that use MaxGUI for windowed mode?

You can set the size and position, or even maximize, minimize the window. Put it on top of others, force the focus to it, give it an alpha value to look through or check for dropped files.
Set a maximum or minimum size between it could be resized. Switch on or off titlebar, toolbar, menu, statusbar. Give it background color and a lot more...

A few commands:
SetGadgetShape( gadget:TGadget,x,y,w,h )
SetMinWindowSize( window:TGadget,w,h )
MaximizeWindow( window:TGadget )