So perhaps I am missing something, but I tried working with Radial Menu, particularly the Toolbar portion of it and I cannot get it to do what I am wanting. What I want to be able to do is hold down a button in the toolbar (like alt for instance) and then use the pen. So I need to be able to use toolbar independently of whether or not the pen is already down on the screen etc. From what I can tell, it does not support this. At least, in all my tries I cannot get it to work this way. Perhaps I'm just crazy!