On Fri, Jan 11, 2002 at 05:20:03PM +0300, Alexander Kotelnikov wrote: > Then I thin a comment should be paleced in FvwmButtons man page near > *FvwmButtons: Pixmap pixmapfile > Specifies a background pixmap to use. Specify > "none" for a transparent background. > > Dominik> > >> Can you tell me what is this purpose? > Dominik> > Dominik> I think the idea was to have a labeled button with a pixmap above > Dominik> it that indicates the action that the button triggers. You are > > Hmm.. This is done with "Icon", not with all buttons wide "Pixmap", or > I understand something incorrectly?
Fixed. Bye Dominik ^_^ ^_^ -- Dominik Vogt, [EMAIL PROTECTED] Reply-To: [EMAIL PROTECTED] -- Visit the official FVWM web page at <URL:http://www.fvwm.org/>. To unsubscribe from From [EMAIL PROTECTED] Sun Jan 13 01:13:42 2002 Received: by sina.hpc.uh.edu (TLB v0.09a (1.20 tibbs 1996/10/09 22:03:07)); Sun, 13 Jan 2002 01:13:42 -0600 (CST) Received: from karazm.math.uh.edu (karazm.math.uh.edu [129.7.128.1]) by sina.hpc.uh.edu (8.9.3/8.9.3) with ESMTP id BAA08887 for <fvwm-workers@hpc.uh.edu>; Sun, 13 Jan 2002 01:13:32 -0600 (CST) Received: from inpbox.inp.nsk.su (inpbox.inp.nsk.su [193.124.167.24]) by karazm.math.uh.edu (8.9.3/8.9.3) with ESMTP id BAA03330 for <fvwm-workers@fvwm.org>; Sun, 13 Jan 2002 01:13:24 -0600 (CST) Received: from Sky.inp.nsk.su (Sky.inp.nsk.su [193.124.167.84]) by inpbox.inp.nsk.su (8.9.0/8.9.0) with ESMTP id NAA06273 for <fvwm-workers@fvwm.org>; Sun, 13 Jan 2002 13:02:45 +0600 (NSK) Received: from localhost (localhost [127.0.0.1]) by Sky.inp.nsk.su (8.9.1a/8.9.1) with ESMTP id NAA591952 for <fvwm-workers@fvwm.org>; Sun, 13 Jan 2002 13:00:45 +0600 (NSK) Date: Sun, 13 Jan 2002 13:00:40 +0600 From: "Dmitry Yu. Bolkhovityanov" <[EMAIL PROTECTED]> To: fvwm-workers@fvwm.org Subject: Re: Exec in fvwm In-Reply-To: <[EMAIL PROTECTED]> Message-ID: <[EMAIL PROTECTED]> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: [EMAIL PROTECTED] Precedence: list X-Majordomo: 1.94.jlt7 On Sun, 13 Jan 2002, Alexander Kotelnikov wrote: > >>>>> On Sat, 12 Jan 2002 20:56:25 -0500 > >>>>> "Dan" == Dan Espen <[EMAIL PROTECTED]> wrote: > Dan> > Dan> Alexander Kotelnikov <[EMAIL PROTECTED]> writes: > >> Hello once again. > >> > >> Using setsid() was a bit husty. setpgrp() is enough. > Dan> > Dan> The man page says setpgrp is a BSDism. > Dan> For SVR4 setpgid would be the right thing to use. > > of course we can use setpgid(0,0), but setpgrp() is in SUSV2. setpgrp() is nonportable: in SysV and Linux it is int setpgrp(void), while on *BSD it is setpgrp(pid_t pid, pid_t pgrp). > BTW, I was surprised finding out fvwm use fork instead of vfork for > Exec. There is a note about that not all platforms support vfork butwe > can easily check it in configure time. vfork() is a disaster and shouldn't be used. For a historic description, read the Linux manpage for vfork(2), especially the 2nd paragraph in the BUGS section. As to what to use for child processes before exec(): the setsid() is the right way to go. In case if we don't want setsid(), we should disassociate from a controlling tty "manually". At least in Linux and *BSD it is achieved with a code like fd = open("/dev/tty", O_RDWR); if (fd >= 0) { ioctl(fd, TIOCNOTTY, NULL); close(fd); } However, this isn't as portable as setsid() and, AFAIR, requires a prior setpgrp(). Well, after writing above text I've found an excerpt from UnixWorld Online at http://www.ic-chernobyl.kiev.ua/~ak/12.lst.html, and the code is (Listing 3): if (fork() != 0) exit(0); /* parent terminates */ /* child code: */ #ifdef BSD setpgrp(0, getpid()); /* change process group */ if ((fd = open("/dev/tty", O_RDWR)) >= 0) { /* open control tty */ ioctl(fd, TIOCNOTTY, 0); /* and lose it */ close(fd); } #else /* System V */ setpgrp(); /* lose controlling terminal and change process group */ #endif BTW, I've looked through SysV setpgrp manpage (Solaris 2.5.1) and it explicitly states that setpgrp() "...releases its controlling terminal". _________________________________________ Dmitry Yu. Bolkhovityanov The Budker Institute of Nuclear Physics Novosibirsk, Russia -- Visit the official FVWM web page at <URL:http://www.fvwm.org/>. To unsubscribe from the list, send "unsubscribe fvwm-workers" in the body of a message to [EMAIL PROTECTED] To report problems, send mail to [EMAIL PROTECTED]
