On 28 Mar 2001, at 23:11, FrançoisVan Emelen wrote:
> Well, I really can't tell. I'm not a programmer; my skills are unfortunately
> limited to some Sbasic.
> What I know about SCR_LIM and SCR_YLIM is this:
> If launch the procedure below in QD with F10 (Sbas/QD thing), you will see a
> black window (6 lines) with stippled border, but if line 100 is REM, you
> won't.
> My conclusion is: SCR_XLIM and SCR_YLIM functions open a primary window.
>
> 100 xsize%=SCR_XLIM:ysize%=SCR_YLIM
> 120 set_windows
> 9460 DEFine PROCedure set_windows
> 9480 LOCal iscompiled
> 9500 iscompiled=DEVTYPE(#0)>0
> 9520 IF iscompiled
> 9540 xsize%=SCR_XLIM:ysize%=SCR_YLIM
> 9560 PWoutln#0,xsize%,ysize%,0,0
> 9580 WINDOW#0,xsize%,ysize%,0,0
> 9680 ELSE
> 9700 OPEN#0,'con'
> 9720 ysize%=SCR_YLIM :xsize%=SCR_XLIM
> 9740 CLOSE#0
> 9760 END IF
> 9780 END DEFine set_windows
>
> Hope this can help you.
> Sorry for my poor English; I'm not a native speaker.
You're doing just fine!
The problem is due to scr_xlim and ylim opening a "phantom" window as
Duncan Neithercut suggested. To be able to use the trap that telle
about the display size, you need a "channel ID", in other words a
channel must be open. If none is, one will be opened automatically.
That's the small one you see then.
Wolfgang
