leif@ambush.dk (Leif Andrew Rump) (08/03/89)
Try this out on EGA/VGA/... and then on CGA/... (I haven't tried all
possibilities, but the _TWO_ result is the same every time on those
two monitors, even with or without ansi.sys. i also haven't tried
earlier versions of Turbo Pascal but it's probably the same).
I'm trying to make a window with only one line. As with any other
window it scrools if you put more in to it than there is space for
_BUT_ on a CGA/... monitor _ALL_ the lines under the window scrools
up!!!!! (see the example on the bottom of this letter).
program Turbo_Pascal_window_BUG;
uses
crt;
begin (* Turbo_Pascal_window_BUG *)
clrscr;
gotoxy(1, 10);
write('abcdefghijklmnopqrstuvwxyz{|}ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]');
gotoxy(1, 20);
write('abcdefghijklmnopqrstuvwxyz{|}ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]');
gotoxy(1, 25);
write('abcdefghijklmnopqrstuvwxyz{|}ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]');
window(10, 15, 20, 15);
write('abcdefghijklmnopqrstuvwxyz{|}ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]');
end. (* Turbo_Pascal_window_BUG *)
How it should be and is on EGA/VGA/... (more or less!):
----------------------------------------------------------
abcdefghijklmnopqrstuvwxyz{|}ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]
STUVWXYZ[\]
abcdefghijklmnopqrstuvwxyz{|}ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]
abcdefghijklmnopqrstuvwxyz{|}ABCDEFGHIJKLMNOPQTSTUVWXYZ[\]
----------------------------------------------------------
How it is on CGA/... (also more or less!):
----------------------------------------------------------
abcdefghijklmnopqrstuvwxyz{|}ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]
STUVWXYZ[\]
nopqrstuvwxyz{|}ABCDEFGHIJKLM
abcdefghijklm NOPQRSTUVWXYZ[\]
nopqrstuvwxyz{|}ABCDEFGHIJKLM
abcdefghijklm NOPQRSTUVWXYZ[\]
----------------------------------------------------------
Leif Andrew Rump, AmbraSoft A/S, Roejelskaer 15, DK-2840 Holte, Denmark
UUCP: leif@ambra.dk, phone: +45 42424 111, touch phone: +45 42422 817+313
> > > Why are tall Irish girls with red hair so wonderful ? ? ? < < <leonard@bucket.UUCP (Leonard Erickson) (08/10/89)
<description of problem that only shows up when using a single line window on a CGA omitted> I forwarded the message describing the problem to the Borland Forum on Compuserve. Their response was that the "bug" is due to using CGA on a machine with an outdated BIOS. This is a known bug in windowing on a CGA. But the problem is in the BIOS, not in TP. -- Leonard Erickson ...!tektronix!reed!percival!bucket!leonard CIS: [70465,203] "I'm all in favor of keeping dangerous weapons out of the hands of fools. Let's start with typewriters." -- Solomon Short