Quoting Albert Jongkit Wong <[EMAIL PROTECTED]>:
> Is there a way to get the keyboard or mouse back from a frozen
> application? I've looked around and haven't been able to find any
> information about this. It would seem that when an Xclient freezes up
> and
> needs to be killed, there could be some way to get the keyboard and
> mouse
> to unlock -- perhaps with an optional keybinding or something like that?
>
> It would be very handy to not have to kill X to get the keyboard back
> when
> the only thing frozen is gaim or something similar...
Hi,
I wrote code for this some months ago, it is the current CVS. I Updated
the XF86Config manpage to document it:
--
Option "AllowDeactivateGrabs" "boolean"
This option enables the use of the Ctrl+Alt+Keypad-
Divide key sequence to desactivate any active key�
board and mouse grabs. Default: off.
Option "AllowClosedownGrabs" "boolean"
This option enables the use of the Ctrl+Alt+Keypad-
Multiply key sequence to kill clients with an
active keyboard or mouse grab as well as killing
any application that may have locked the server,
normally using the XGrabServer(3) Xlib function.
Default: off.
Note that the options AllowDeactivateGrabs and
AllowClosedownGrabs will allow users to remove the
grab used by screen saver/locker programs. An API
was written to such cases. If you enable this
option, make sure your screen saver/locker is
updated.
--
A very simple wrapper to disable killing xlock is:
--
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <X11/Xlib.h>
#include <X11/extensions/xf86misc.h>
int
main(int argc, char *argv[])
{
int xfree86, major, minor;
Display *display = XOpenDisplay(NULL);
if (display == NULL) {
fprintf(stderr, "Cannot open display.\n");
exit(1);
}
xfree86 = strstr(ServerVendor(display), "XFree86") != NULL;
if (xfree86) {
signal(SIGHUP, SIG_IGN);
signal(SIGPIPE, SIG_IGN);
signal(SIGINT, SIG_IGN);
signal(SIGQUIT, SIG_IGN);
if (XF86MiscQueryVersion(display, &major, &minor) == False) {
fprintf(stderr, "Failed to call XF86MiscQueryVersion.\n");
exit(1);
}
if (major >= 0 && minor >= 5 &&
XF86MiscSetGrabKeysState(display, False) ==
MiscExtGrabStateLocked) {
fprintf(stderr, "Cannot disable XFree86 hotkeys to remove grabs.\n")
;
exit(1);
}
XFlush(display);
}
system("xlock");
if (xfree86 && major >= 0 && minor >= 5) {
XF86MiscSetGrabKeysState(display, True);
XFlush(display);
}
return (0);
}
--
> -Albert
>
> ------------
> I believe in death after life...
>
> "Someone has to be screwed up to teach everyone else"
>
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Paulo
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