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;
> }
--
Romain <buchu@xxxxxxxxxxxx>
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