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From: mwm@VIOLET.BERKELEY.EDU (Mike  Meyer, My watch has windows)
Newsgroups: comp.sys.amiga
Subject: Re: How much of the console.device do I need to close?
Message-ID: <8706012228.AA20376@violet.berkeley.edu>
Date: Mon, 1-Jun-87 18:28:19 EDT
Article-I.D.: violet.8706012228.AA20376
Posted: Mon Jun  1 18:28:19 1987
Date-Received: Wed, 3-Jun-87 02:27:31 EDT
Sender: daemon@ucbvax.BERKELEY.EDU
Lines: 59

The continueing saga of the quest for the re-openable console window.

In our last episode, Carolyn Scheppner had suggested:

>>   Haven't done it myself but my guess is that your failure to Remove the
>> initial request is causing the problems.  I suggest trying the same code
>> used for aborting and removing an asynchronous printer request:

This was done. In fact, the code tried was:

Close a window (but leave console open):

	if (!CheckIO(consoleReadMsg)) AbortIO(consoleReadMsg);
	WaitIO(consoleReadMsg) ;
	CloseDevice(consoleWriteMsg);
	if (consoleReadMsg) DeleteStdIO(consoleReadMsg);
	if (consoleWriteMsg) DeleteStdIO(consoleWriteMsg);

And to open a window:

	if ((consoleWriteMsg = CreateStdIO(consoleWritePort)) == NULL)
		cleanup(TRUE);
	if ((consoleReadMsg = CreateStdIO(consoleReadPort)) == NULL)
		cleanup(TRUE);
	if (OpenConsole(consoleWriteMsg,consoleReadMsg,EmW) != 0)
		cleanup(TRUE);
	consoleMsgBit = consoleReadPort->mp_SigBit;

	QueueRead(consoleReadMsg,&letter);

This has the exact same problems mentioned before: the last character
typed before the window open/close shows up in the input queue.

The code to input characters is from the RKM, and is basically the
same as in Rob Peck's book:

	if (wakeupmask & CONSOLE_MESSAGE) {	/* keyboard	 */
		GetMsg(consoleReadPort);
		qchar(letter);
		QueueRead(consoleReadMsg, &letter);
		charfound = TRUE;
	}

where qchar puts the character in an internal queue.

I think the problem is that some bogus message (other than input
ready) is generated by the window StdIO open/close, and shows up on
consoleReadPort. However, I can't find documentation as to what should
be check on the Msg coming from the port.

Anyone got any ideas?

	Thanx,
	<mike
--
How many times do you have to fall			Mike Meyer
While people stand there gawking?			mwm@berkeley.edu
How many times do you have to fall			ucbvax!mwm
Before you end up walking?				mwm@ucbjade.BITNET