From 8b413719940a2bc0e5ba3b1cd60024938ccdca76 Mon Sep 17 00:00:00 2001
From: girst <girst@users.noreply.github.com>
Date: Wed, 21 Mar 2018 18:22:52 +0100
Subject: [PATCH] flash all monitors

---
 Makefile   |  2 +-
 xvisbell.c | 11 +++++------
 2 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/Makefile b/Makefile
index de25240..dd82abe 100644
--- a/Makefile
+++ b/Makefile
@@ -7,7 +7,7 @@ TARGET = xvisbell
 all: $(TARGET)
 
 $(TARGET):%:%.c
-	$(CC) $(CFLAGS) $< -o $@
+	$(CC) $< -o $@ $(CFLAGS)
 
 clean:
 	rm -f $(TARGET)
diff --git a/xvisbell.c b/xvisbell.c
index d5f34b9..55c9620 100644
--- a/xvisbell.c
+++ b/xvisbell.c
@@ -1,12 +1,14 @@
 /* briefly flashes a fullscreen white window to simulate a visual bell */
 #define _DEFAULT_SOURCE
 #include <X11/Xlib.h>
+#include <X11/Xutil.h>
 #include <unistd.h>
 
 int main (int argc, char** argv) {
 	Display *display;
 	Window  window;
 	XWindowAttributes xwa;
+	XSetWindowAttributes xswa;
 	unsigned long bgcolor = 0xffffff;
 
 	/* parse command line arguments for 3bit colors */
@@ -32,13 +34,10 @@ int main (int argc, char** argv) {
 		0, 0, /* border settings */
 		bgcolor);
 
-	Atom wdialog = XInternAtom (display, "_NET_WM_WINDOW_TYPE_DIALOG", 1);
-	XChangeProperty (display, window,
-		XInternAtom (display, "_NET_WM_WINDOW_TYPE", 1),
-		XInternAtom (display, "ATOM", 1),
-		32, PropModeReplace, (unsigned char *) &wdialog, 1);
+	/*shut out window manager (makes window full screen over all monitors)*/
+	xswa.override_redirect = 1;
+	XChangeWindowAttributes (display, window, CWOverrideRedirect, &xswa);
 
-	XFlush(display);
 	XMapWindow(display,window);
 	XFlush(display);
 
-- 
2.39.3