Where can I find the control codes for VT100 terminal ?

I am going to write a C program which ought to print characters on screen
for an experiment on Short Term Memory test.  Since the program need to
place the char at random position on screen and then erase the char; I need
to printf() some control codes.  I don't have information on the control
chars for terminal (I guess the vt100 is the most common one).  Can anyone
send me a pointer on "where can I ftp the necessary information" ?

Mr.WONG Sai Kee
Graduate Student
(NeXTMail Welcome)

skw...@cuse1.se.cuhk.hk (Wong Sai Kee (Graduate Assistant)) writes:
| Since the program need to
| place the char at random position on screen and then erase the char; I need
| to printf() some control codes.  I don't have information on the control
| chars for terminal (I guess the vt100 is the most common one).
|
This may be overkill for what you want, but the "curses" library
provides for term-type-independent code, instead of restricting yourself
to (say) vt100.  "man 3v curses".  (Never used it myself, don't know how
much is involved in figuring out what's needed.)

ian

Thanks, I got reply from Ernest Yik, Michael Chan, Kirby.  Now, I am using
the curses.

SK

ian barland (boy wander) (ia...@cse.ucsc.edu) wrote:
: skw...@cuse1.se.cuhk.hk (Wong Sai Kee (Graduate Assistant)) writes:
: | Since the program need to
: | place the char at random position on screen and then erase the char; I need
: | to printf() some control codes.  I don't have information on the control
: | chars for terminal (I guess the vt100 is the most common one).
: |
: This may be overkill for what you want, but the "curses" library
: provides for term-type-independent code, instead of restricting yourself
: to (say) vt100.  "man 3v curses".  (Never used it myself, don't know how
: much is involved in figuring out what's needed.)

: ian

i used curses a bit last year and it seems ok - its a bit fiddly to start up 
but after that its rather simple to use (you can even make yourself some menus 
and use different terms (as you said))

nick.

In article <CLvKGr.M1r@eng_ser1.ie.cuhk.hk> skw...@cuse1.se.cuhk.hk (Wong Sai Kee (Graduate Assistant)) writes:

   I am going to write a C program which ought to print characters on screen
   for an experiment on Short Term Memory test.  Since the program need to
   place the char at random position on screen and then erase the char; I need
   to printf() some control codes.  I don't have information on the control
   chars for terminal (I guess the vt100 is the most common one).  Can anyone
   send me a pointer on "where can I ftp the necessary information" ?

If you're writing it for use on Unix, you should be using either the
termcap or terminfo libraries to obtain the desired command strings.
DO NOT EMBED TERMINAL COMMAND CODES IN YOUR PROGRAM.  That only causes
trouble for everyone else who doesn't have whatever flavor of terminal
you used as your model.

The termcap and terminfo libraries provide very simple functions for
obtaining and using the full range of terminal control strings.  Use
them, and your program will work on ANY terminal, for which a termcap
or terminfo description exists.  (I.e. nearly everything, or someone
can easily create one.)

Curses could be overkill, but you're welcome to try it if you like.
The problem with it is that there are at least two incompatible
versions of curses out there, and most vendor's implementations (to my
experience) are buggy in various places.

				Good Luck!
--
Edwin Wiles | Sterling Software, Inc. ITD | Vienna, VA, USA
Preferred..: ewi...@vienna.itd.sterling.com
GCS d--@ -p+ c++(++++) l u++ e- m+(++) s+/ n-(+) h--- f g+ w+ t+ r(+) y?

In <2kr05v$11...@darkstar.UCSC.EDU>,
ia...@cse.ucsc.edu (ian barland (boy wander)) writes:
>skw...@cuse1.se.cuhk.hk (Wong Sai Kee (Graduate Assistant)) writes:
>| Since the program need to
>| place the char at random position on screen and then erase the char; I need
>| to printf() some control codes.  I don't have information on the control
>| chars for terminal (I guess the vt100 is the most common one).
>|
>This may be overkill for what you want, but the "curses" library
>provides for term-type-independent code, instead of restricting yourself
>to (say) vt100.  "man 3v curses".  (Never used it myself, don't know how
>much is involved in figuring out what's needed.)

the curses man page i've looked through is pretty huge... but VERY
nice to learn.  it's very flexible, etc, once you find your way
around it...

as for the ANSI escape codes, you can do movement with:

	^[[x;yH

where '^[' is the ESCAPE charachter... (ascii 27?)  'x' and 'y' are
integer coordinates on the screen, and '[' and 'H' are constants

another way to do it would be to use \r in your printf.  that SHOULD
take you to the beginning of the line, as i recall...  (though i got
used to that on a system that's far from standard, so i could be
wrong)


enjoy... good luck.

	david lindes
	lin...@asd.sgi.com

	#include <std_disclaimer.h>

In article <CLvKGr.M1r@eng_ser1.ie.cuhk.hk>,
Wong Sai Kee (Graduate Assistant) <skw...@cuse1.se.cuhk.hk> wrote:
[ request deleted. ]

well, all you realy need is...

(esc)[Y;Xm I think...

so the program will look like this... [ where (esc) is printed , put the escape
character. How you do that is dependent on the editor you use. ]

.
.
.
printat (int X,int Y);
{
	printf("%s%d%c%d%c%s","(esc)[",Y,';',X,'m',"String to print");
}

assuming here that X and Y are the right way around. [ its been a while since
I did this] and that X and Y  are generated elsewhere this should work.

hope this helps.

I think I tried mailing this to you, but our mail server couldn't find you.

]\/[as!

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