Path: utzoo!attcan!uunet!mcvax!enea!kth!draken!duvan!drs-ano
From: drs-ano@duvan.nada.kth.se (Gunnar Nordmark)
Newsgroups: comp.sys.amiga
Subject: Using Software Interrupts for Menu Handling
Summary: How do I abort a fgets() from within an interrupt?
Keywords: console packets, intuition menus, interrupts
Message-ID: <416@draken.nada.kth.se>
Date: 16 Jun 88 13:10:13 GMT
Sender: news@nada.kth.se
Reply-To: G@epsilon.stacken.kth.se (Gunnar Nordmark)
Organization: The Royal Inst. of Techn., Stockholm
Lines: 17

I have set up a IDCMP port that generates software interrupts when
messages arrive. It works great!
The window is opened with CON: and I have it as stdin for the program.
When you call fgets(buf,stdin) the program requests input from CON:
and goes to sleep until you type a <RETURN>.
The problem is that if you select QUIT from the menu, you would like
to leave the program instantly, not after the fgets() has returned.

Is there a way to abort the fgets()?  Can I send a packet to the
device driver that forces it to return my readrequest with an error?

Carolyn? Andy? (or some other CON: packet wizard?)

SNAIL: Gunnar Nordmark          VOICE: (+46) 8 - 755 42 52
       Nora strand 5
       S-182 34 DANDERYD        EMAIL: G@epsilon.stacken.kth.se
       SWEDEN                          nordmark@vaxkab.sunet.se