Article View: comp.std.c
Article #6256How to read terminal reports from a C program, Help !
From: Francis Demierre
Date: Wed, 28 Feb 1990 21:48
Date: Wed, 28 Feb 1990 21:48
29 lines
1671 bytes
1671 bytes
Hi Netland !
I was trying today to write a routine that would query the status of a printer
connected to a vt320 terminal.
To get a printer status report, an escape sequence is to be sent to the terminal
( ^[[?12n as far as I remember). The terminal will then generate a reply
escape sequence such as ^[[?10n (Printer not connected).
My question is:
Under UNIX from a C program, how do you read the reply from the terminal ?
(as far as I could experiment, the reply comes back on stdin...)
Let's say I send the query with somwething like 'puts("\033[?12n");', how
do I read the answer of the terminal. I would also like to use a similar
method to read the terminal setting (VT100, VT220 or VT320 mode) and
the function keys content. What is the magic ?
Thank you in anticipation !
(answers preferably by Email as this is probably a "green horns" question ;-) )
BTW: I need a portable code that would run on RT AIX, PS2 AIX, XENIX and
ULTRIX if it is possible.
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arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!mcsun!cernvax!chx400!hslrswi!francisShow Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!mcsun!cernvax!chx400!hslrswi!francis From: francis@hslrswi.UUCP (Francis Demierre) Newsgroups: comp.std.c,comp.unix.wizards Subject: How to read terminal reports from a C program, Help ! Message-ID: <1107@hslrswi.UUCP> Date: 28 Feb 90 21:48:47 GMT Organization: Hasler AG, CH-3000 Berne 14, Switzerland Lines: 29