Yes, it's a good idea, i will put a mask on my keyboard it will be
cleanest !
When the keyboard is grab it's possible to switch on tty1 or use the
mouse to kill the daemon, but now it's not a problem because it
works !! :)
Thanks for your help
Romain
On Thu, 2004-04-22 at 12:33 +0200, Henrik Sandklef wrote:
> Hi!
>
> Again, I think you should grab the seperate keys instead of the whole
> keyboard.
>
> Anyway, a good thing to avoid a lockout due to the keyboard being grabbed
> is to use XNest. Test your application in a Xnested session. If your
> keyboard is "grabbed" so you can't do anything you an just kill the
> XNest-session from your "main" session.
>
> /h
> > Yessss it's working !
> >
> > Thanks you very much for your help, i will be able to continue my work
> > :)
> >
> > Romain
> >
> >
> > On Thu, 2004-04-22 at 00:49, Henrik Sandklef wrote:
> >> Hmmm.... If you flush the X buffer after the ungrab call. Just add
> >>
> >> XFlush(disp);
> >>
> >> That should do it... I hope :)
> >>
> >> BTW, I would have grabbed the keys insted of the whole keyboard.
> >>
> >> /hesa
> >> On Tue, 2004-04-20 at 20:28, Romain wrote:
> >> > Humm nobody know where i can find help ?
> >> >
> >> > On Mon, 2004-04-19 at 01:39, Romain wrote:
> >> > > Hello,
> >> > >
> >> > > I try to make a little program based on xlib and xosd, it's a daemon
> >> > > listening on the keyboard made for example to increase volume level
> >> or
> >> > > other things.
> >> > >
> >> > > But i have a problem to Ungrab the keyboard, i made a sample of what
> >> i
> >> > > would like to do, if someone see where is the problem
> >> > >
> >> > > Thanks ! :)
> >> > >
> >> > > Romain
> >> > >
> >> > > (gcc devxosd.c -o devxosd -lxosd)
> >> > >
> >> > > /*
> >> > > * XOSD TEST
> >> > > */
> >> > >
> >> > > #include <stdio.h>
> >> > > #include <stdlib.h>
> >> > > #include <unistd.h>
> >> > > #include <fcntl.h>
> >> > > #include <sys/ioctl.h>
> >> > > #include <errno.h>
> >> > > #include <linux/types.h>
> >> > >
> >> > > #include <xosd.h>
> >> > > #include <X11/Xlib.h>
> >> > > #include <X11/keysym.h>
> >> > > #include <X11/Xutil.h>
> >> > >
> >> > > #include <sys/soundcard.h>
> >> > >
> >> > >
> >> > > int getSound (void)
> >> > > {
> >> > > int fd_mixer, vol;
> >> > >
> >> > > if ((fd_mixer = open ("/dev/mixer", O_RDWR)) < 0) {
> >> > > perror ("/dev/mixer");
> >> > > return -1;
> >> > > }
> >> > >
> >> > > if (ioctl (fd_mixer, SOUND_MIXER_READ_VOLUME, &vol) == -1) {
> >> > > perror ("ioctl");
> >> > > return -1;
> >> > > }
> >> > >
> >> > > if (close(fd_mixer) == -1) {
> >> > > perror("close");
> >> > > return -1;
> >> > > }
> >> > >
> >> > > return vol&255;
> >> > > }
> >> > >
> >> > > int setSound (int v)
> >> > > {
> >> > > int fd_mixer, vol;
> >> > >
> >> > > if ((fd_mixer = open ("/dev/mixer", O_RDWR)) < 0) {
> >> > > perror ("/dev/mixer");
> >> > > return -1;
> >> > > }
> >> > >
> >> > > vol = (v << 8) | v ;
> >> > >
> >> > > if (ioctl (fd_mixer, SOUND_MIXER_WRITE_VOLUME, &vol) == -1) {
> >> > > perror ("ioctl");
> >> > > return -1;
> >> > > }
> >> > >
> >> > > if (close(fd_mixer) == -1) {
> >> > > perror("close");
> >> > > return -1;
> >> > > }
> >> > >
> >> > > return 0;
> >> > > }
> >> > >
> >> > > int volume (int level)
> >> > > {
> >> > > Display *disp = NULL;
> >> > > Window root;
> >> > >
> >> > > disp = XOpenDisplay(NULL);
> >> > > if (!disp) {
> >> > > fprintf(stderr, "Failed to open display\n");
> >> > > return -1;
> >> > > }
> >> > >
> >> > > root = DefaultRootWindow(disp);
> >> > >
> >> > >
> >> > > /* Xlib */
> >> > > int nbre;
> >> > > char chaine[2];
> >> > > KeySym touche;
> >> > >
> >> > > /* Xosd */
> >> > > xosd *osd = NULL;
> >> > > char *font =
> >> > > "-adobe-helvetica-bold-r-normal-*-*-240-*-*-p-*-iso8859-1";
> >> > > char *title = "Volume";
> >> > >
> >> > > int isUp = 1;
> >> > >
> >> > > osd = xosd_create (2);
> >> > > if (osd == NULL) {
> >> > > perror ("Could not create \"osd\"");
> >> > > return -1;
> >> > > }
> >> > >
> >> > > if (xosd_set_font (osd, font)) {
> >> > > printf ("Cound not set font\n");
> >> > > return -1;
> >> > > }
> >> > >
> >> > > xosd_set_shadow_offset (osd, 2);
> >> > > xosd_set_colour (osd, "white");
> >> > >
> >> > > /* Position */
> >> > > xosd_set_pos (osd, XOSD_bottom);
> >> > > xosd_set_vertical_offset (osd, 20);
> >> > > xosd_set_align (osd, XOSD_center);
> >> > > xosd_set_horizontal_offset (osd, 0);
> >> > > xosd_set_bar_length(osd, 20);
> >> > >
> >> > > xosd_display (osd, 0, XOSD_string, title);
> >> > > xosd_display (osd, 1, XOSD_percentage, level);
> >> > >
> >> > > XGrabKeyboard (disp, root, True, GrabModeAsync, GrabModeAsync,
> >> > > CurrentTime);
> >> > >
> >> > > while (isUp) {
> >> > > XEvent ev;
> >> > >
> >> > > XNextEvent (disp, &ev);
> >> > > if (ev.type == KeyPress) {
> >> > >
> >> > > nbre = XLookupString (&ev.xkey, chaine, 2, &touche,
> >> 0);
> >> > > chaine[nbre] = 0;
> >> > >
> >> > > switch (touche) {
> >> > >
> >> > > case XK_q:
> >> > > case XK_Q:
> >> > > case XK_Escape:
> >> > > isUp = 0;
> >> > > break;
> >> > >
> >> > > case XK_Right:
> >> > > level = (level > 95 ? 100 : level + 5 );
> >> > > setSound(level);
> >> > > xosd_display (osd, 1, XOSD_percentage, level);
> >> > > break;
> >> > >
> >> > > case XK_Left:
> >> > > level = (level < 5 ? 0 : level - 5 );
> >> > > setSound(level);
> >> > > xosd_display (osd, 1, XOSD_percentage, level);
> >> > > break;
> >> > >
> >> > > default:
> >> > > break;
> >> > > }
> >> > > }
> >> > > }
> >> > >
> >> > > XUngrabKeyboard (disp, CurrentTime);
> >> > > xosd_destroy (osd);
> >> > > return 0;
> >> > > }
> >> > >
> >> > >
> >> > > int main (int argc, char *argv[])
> >> > > {
> >> > > volume (getSound());
> >> > > printf ("I want the keyboard back !\n");
> >> > > sleep (20);
> >> > > return 1;
> >> > > }
> >>
> >> _______________________________________________
> >> XFree86 mailing list
> >> XFree86@xxxxxxxxxxx
> >> http://XFree86.Org/mailman/listinfo/xfree86
> > --
> > Romain <buchu@xxxxxxxxxxxx>
> > _______________________________________________
> > XFree86 mailing list
> > XFree86@xxxxxxxxxxx
> > http://XFree86.Org/mailman/listinfo/xfree86
> >
>
>
> --
> Though we rush ahead to save our time
> We are only what we feel
>
> -- Neil Young / On the Way Home --
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