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redo checking for an active wm with xcb

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David Hill 2012-07-15 14:23:26 -04:00 • committed by Reginald Kennedy
parent f9b30c3e1d
commit be6a1f8c47
1 changed files with 14 additions and 15 deletions
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29
spectrwm.c
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@ -7098,22 +7098,20 @@ xerror(Display *d, XErrorEvent *ee)
return (-1);
}
int
void
active_wm(void)
{
other_wm = 0;
xerrorxlib = XSetErrorHandler(xerror_start);
int num_screens, i;
const uint32_t val = XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT;
xcb_screen_t *sc;
/* this causes an error if some other window manager is running */
XSelectInput(display, DefaultRootWindow(display),
SubstructureRedirectMask);
do_sync();
if (other_wm)
return (1);
XSetErrorHandler(xerror);
do_sync();
return (0);
num_screens = xcb_setup_roots_length(xcb_get_setup(conn));
for (i = 0; i < num_screens; i++) {
sc = get_screen(i);
xcb_change_window_attributes(conn, sc->root,
XCB_CW_EVENT_MASK, &val);
}
}
void
@ -7641,11 +7639,12 @@ main(int argc, char *argv[])
free(evt);
}
if (active_wm())
errx(1, "other wm running");
active_wm();
xcb_aux_sync(conn);
if (xcb_poll_for_event(conn) != NULL)
errx(1, "another window manager is currently running");
setup_globals();
setup_screens();
setup_keys();