John Sadler wrote: > It would seem to be an advantage in pointer programs to be able to > create a virtual screen area, which one uses all the normal printing > and graphics routines and copies back the appropiate section to the > window everytime something is changed or the size of the window is > changed. So > > open #3 virtual_screen > print #3 "hellow World > copy virtual_screen window > etc. > Has anybody done any work on this?
I suppose this is in order to have an application still working although it is buried? In that case there were extensions to the PE that redirected the CON calls to the save area instead of the screen and a job updated the windows from the save area. To my knowledge they are not compatible to current SMSQ/E versions. Certainly not with anything high colour. With SMSQ/E and applications running on it being much cleaner than the orignal QDOS this sort of background drawing doesn't seem to be out of question. But even I am not prepared to do this task at the time. I still know too little about all the internal workings and implications some changes might have. The exact thing you mentioned might be achieveable by a little tweaking in the channel definition block of a window. There too I am however not 100% sure about all implications this would have. Marcel
