This
Notify(QueryObject(BackBuffer(), 2))returns 0, so I guess it doesn't work. If you make a window with Graphics, Blitz must have stored a handle somewhere so it can close it at the end! But how can I access it. Failing that I'll have to use CreateWindow (which is new to me in Blitz) but you can't use backbuffer and flip can you, which would mean some horrid re-writing.