From 572ac399540da0662e87fd5797cd8fea3e0d687b 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   |  5 ++---
 xvisbell.c | 10 ++++------
 2 files changed, 6 insertions(+), 9 deletions(-)

diff --git a/Makefile b/Makefile
index de25240..3582a93 100644
--- a/Makefile
+++ b/Makefile
@@ -1,13 +1,12 @@
 .PHONY: all clean
-CC = gcc
-CFLAGS = -std=c89 -lXt -lX11 
+CFLAGS = -std=c89 -lX11
 PREFIX = $(DESTDIR)/usr/local
 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..5593fa6 100644
--- a/xvisbell.c
+++ b/xvisbell.c
@@ -7,6 +7,7 @@ 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 +33,10 @@ 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