add an override_redirect InputOnly window utility.

The intent was the following:
 This is mostly a copy of override.c, it lets you map a small window
 (1x1 at 0,0 by default) that openbox will treat like the root window,
 useful for scrolling to change desktops over fullscreen and maximized
 windows.

Since then openbox has learned to ignore other's override redirect windows
but I think it might still be useful to have this util.

diff --git a/tests/overrideinputonly.c b/tests/overrideinputonly.c
new file mode 100644 (file)
index 0000000..0c13ac3
--- /dev/null
+++ b/tests/overrideinputonly.c
@@ -0,0 +1,58 @@
+/* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
+
+   override.c for the Openbox window manager
+   Copyright (c) 2003-2007   Dana Jansens
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   See the COPYING file for a copy of the GNU General Public License.
+*/
+
+#include <stdio.h>
+#include <X11/Xlib.h>
+
+int main (int argc, char *argv[]) {
+  XSetWindowAttributes xswa;
+  unsigned long        xswamask;
+  Display   *display;
+  Window     win;
+  XEvent     report;
+  int        i,x=0,y=0,h=1,w=1;
+
+  for (i=0; i < argc; i++) {
+    if (!strcmp(argv[i], "-g") || !strcmp(argv[i], "-geometry")) {
+      XParseGeometry(argv[++i], &x, &y, &w, &h);
+    }
+  }
+
+  display = XOpenDisplay(NULL);
+
+  if (display == NULL) {
+    fprintf(stderr, "couldn't connect to X server :0\n");
+    return 0;
+  }
+
+  xswa.override_redirect = True;
+  xswamask = CWOverrideRedirect;
+
+  win = XCreateWindow(display, RootWindow(display, 0),
+                     x, y, w, h, 0, 0, InputOnly,
+                     CopyFromParent, xswamask, &xswa);
+
+  XMapWindow(display, win);
+  XFlush(display);
+
+  while (1) {
+    XNextEvent(display, &report);
+  }
+
+  return 1;
+}