Re: get_key problem in DOS fullscreen
- Posted by ChrisBurch2 <crylex at freeuk.co.uk> Jun 18, 2007
- 566 views
Donald wrote: > > DB James wrote: > > > > Donald wrote: > > > > > > Does anyone know what the problem may be with the following? > > > It may be my system but wondering if anyone else has had anything similar > > > or > > > can help. > > > > > > This code works fine when run in a window but if I go to fullscreen (using > > > Alt-enter > > > before running) it seems to hang. > > > I have to use alt-enter which minimises the window and then close the > > > window > > > > > > Hi Donald, > > > > I moved one of your lines and it works in either a window or fullscreen: > > > > }}} <eucode> > > integer c,i > > i=0 > > > > while (1) do > > c = get_key() > > if c=' ' then > > exit > > else if c!=-1 then > > i=i+1 > > ? {i,c} > > end if > > end if > > end while > > </eucode> {{{ > > > > To keep the window from disappearing immediately, put something like > > while get_key()=-1 do end while > > as the last line. > > > > --Quark > You code gives the same problem on my system!? > > Maybe it's to do with the NVidia GEforce6150 driver or the Dell 1707 LCD > screen. > I don't know why they would affect the get_key routine though. > Presumably PS2 keyboard is fine? Windows XP pro should be ok? > > thanks anyway Hi It initially gave similar results on mine too, (incidentally I put ? {i,c} ? 1/0 at the end, to produce the srroe, and get a readable display. But if you repeatedly press space, or wait, then the program stops. I think this has something to do with keyboard polling speeds in that very fast while loop - the loop is going to fast to read the keys - or something. Obviusly this has something to do with full screen dos mode, as opposed to windowed mode. Exactly what though is a bit of a mystery. Try slowing the loop down a bit, using ex or exc instead of exw, and running from the command line (cmd instead of command - I think these are slightly different) Chris