Hi all, i want to automatically execute some scripts when my monitor setup changes (plug in/out a monitor via VGA).
Is there a utility in base which can do this? I imported x11/srandrd into openbsd-wip which subscribes to the Randr RROutputChange event and made a second small test program which uses xcb to listen for the XCB_RANDR_SCREEN_CHANGE_NOTIFY event. Both programs don't work for me on OpenBSD, as they fire the events only if i manually call `xrandr --auto` after i changed my monitor setup. I tested both programs on Linux Mint 17 Cinnamon and they work there as expected. Does somebody of you know why this is not working on OpenBSD? Regards, Fabian Makefile ---------------------------------------- PROG = monplugd NOMAN = NOMAN LDADD += -L/usr/X11R6/lib LDADD += -lxcb -lxcb-util -lxcb-randr CFLAGS += -I/usr/X11R6/include -Wall CFLAGS += -Wstrict-prototypes -Wmissing-prototypes CFLAGS += -Wmissing-declarations CFLAGS += -Wshadow -Wpointer-arith CFLAGS += -Wsign-compare DEBUG = -g .include <bsd.prog.mk> ---------------------------------------- monplugd.c ---------------------------------------- /* * Copyright (c) 2014 Fabian Raetz <[email protected]> * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include <err.h> #include <stdio.h> #include <stdlib.h> #include <xcb/xcb.h> #include <xcb/xcb_aux.h> #include <xcb/randr.h> int main(int argc, char *argv[]) { const xcb_query_extension_reply_t *extreply; xcb_screen_t *root_screen; xcb_connection_t *conn; xcb_generic_event_t *evt; xcb_randr_screen_change_notify_event_t *sce; int screen, evt_base; if ((conn = xcb_connect(NULL, &screen)) == NULL || xcb_connection_has_error(conn)) errx(1, "cannot open display\n"); root_screen = xcb_aux_get_screen(conn, screen); extreply = xcb_get_extension_data(conn, &xcb_randr_id); if (!extreply->present) errx(1, "no xrandr present"); evt_base = extreply->first_event; xcb_randr_select_input(conn, root_screen->root, XCB_RANDR_NOTIFY_MASK_SCREEN_CHANGE); xcb_flush(conn); while ((evt = xcb_wait_for_event(conn))) { switch (evt->response_type - evt_base) { case XCB_RANDR_SCREEN_CHANGE_NOTIFY: sce = (xcb_randr_screen_change_notify_event_t *)evt; printf("screen change notification\n"); break; default: printf("unknown event %d\n", evt->response_type - evt_base); } free(evt); } return (0); } ----------------------------------------
