From:	Eric Backus <ericb AT lsid DOT hp DOT com>
Subject:	Disable keyboard echo
To:	djgpp AT sun DOT soe DOT clarkson DOT edu (djgpp)
Date:	Thu, 30 Jan 92 12:33:30 PST
Mailer:	Elm [revision: 66.25]
Status:	O

I have the source code to a DES encryption program.  I can compile it
successfully with DJGPP, except for the code fragment which turns off
keyboard echo while asking for a password.  The code looks something
like this:

	Tty = fopen("/dev/con", "r+");
	ioctl(fileno(Tty), TIOCGETP, &ttyb);
	ioctl(fileno(Tty), TIOCGETP, &Ttysav);
	ttyb.sg_flags &= ~ECHO;
	ioctl(fileno(Tty), TIOCSETP, &ttyb);

	/* Get the password */

	ioctl(fileno(Tty), TIOCSETP, &Ttysav);

There is no support for the ioctl() stuff in DJGPP.  I have yet to
find another way to do this.  Does anyone have a method of turning off
(and then back on) the keyboard echo?  Thanks.
--
				Eric Backus
				ericb%hplsla AT hplabs DOT hp DOT com
				(206) 335-2495

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