Path: utzoo!attcan!uunet!lll-winken!elroy.jpl.nasa.gov!zardoz.cpd.com!tmiuv0!rick
From: rick@tmiuv0.uucp
Newsgroups: comp.sys.amiga
Subject: Re: Help with C!!!!
Message-ID: <3615@tmiuv0.uucp>
Date: 26 Jul 90 11:32:05 GMT
References: <28589@cc.usu.edu>
Organization: Technology Marketing Inc., Irvine, CA
Lines: 45

In article <28589@cc.usu.edu>, SLMT9@cc.usu.edu writes:
> 	This is a question to all of you C guru's out there. Is there a way
> to place the CURSOR in a predetermined spot on the screen. Say move it from
> the bottom right hand corner to the upper left to write in that location again
> something like the LOCATE command in basic.
> 	I would really appriciate any help that anyone can give me.
> 	
> 	Joshua
> 	SLMT9@cc.usu.edu

Try this (an ANSI escape sequence):

    printf("\033[10;21H");

That will place the cursor on line 10, column 21 of the screen.  The ANSI
escape sequence is defined as:

    <CSI>y;xH

where <CSI> can be either a hexadecimal 9b or an escape character (0x1b or
octal 33) followed by a '[' character.  The y refers to the row number which
must be specified in ASCII characters, and the x is the column number (again
in ASCII characters).

To make this general purpose, here's a pukey function to do it:

    void poscursor(short row, short column) {
        printf("\033[%d;%dH",row,column);
    }

To put the cursor at line 12, column 43:

    poscursor(12,43);

The escape sequences that the console.device understands are in the ROM
Kernal Manuals (RKM): Libraries and Devices volume.
-- 
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[- O] Rick Stevens
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"I'm tellin' ya, Valiant!  Da whole ting stinks like yesterday's diapers!"
                                - Baby Herman in "Who Framed Roger Rabbit"
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