replace the focus_backup with the screen_support_win, we dont need 2 offscreen windows.

openbox/focus.c

@@ -21,29 +21,14 @@ ObClient *focus_client = NULL;
 GList **focus_order = NULL; /* these lists are created when screen_startup
                                sets the number of desktops */
 
-Window focus_backup = None;
-
 static ObClient *focus_cycle_target = NULL;
 static Popup *focus_cycle_popup = NULL;
 
 void focus_startup()
 {
-    /* create the window which gets focus when no clients get it. Have to
-       make it override-redirect so we don't try manage it, since it is
-       mapped. */
-    XSetWindowAttributes attrib;
 
     focus_client = NULL;
 
-    attrib.override_redirect = TRUE;
-    focus_backup = XCreateWindow(ob_display, ob_root,
-				 -100, -100, 1, 1, 0,
-                                 CopyFromParent, InputOutput, CopyFromParent,
-                                 CWOverrideRedirect, &attrib);
-    XMapRaised(ob_display, focus_backup);
-
-    /* do this *after* focus_backup is created, since it is used for
-       stacking */
     focus_cycle_popup = popup_new(TRUE);
 
     /* start with nothing focused */
@@ -62,8 +47,6 @@ void focus_shutdown()
     popup_free(focus_cycle_popup);
     focus_cycle_popup = NULL;
 
-    XDestroyWindow(ob_display, focus_backup);
-
     /* reset focus to root */
     XSetInputFocus(ob_display, PointerRoot, RevertToPointerRoot,
                    event_lasttime);
@@ -94,7 +77,7 @@ void focus_set_client(ObClient *client)
 
     if (client == NULL) {
 	/* when nothing will be focused, send focus to the backup target */
-	XSetInputFocus(ob_display, focus_backup, RevertToPointerRoot,
+	XSetInputFocus(ob_display, screen_support_win, RevertToPointerRoot,
                        event_lasttime);
         XSync(ob_display, FALSE);
     }

openbox/focus.h

@@ -6,9 +6,6 @@
 
 struct _ObClient;
 
-/*! The window which gets focus when nothing else will be focused */
-extern Window focus_backup;
-
 /*! The client which is currently focused */
 extern struct _ObClient *focus_client;
 

openbox/screen.c

@@ -30,23 +30,22 @@
 			SubstructureNotifyMask | SubstructureRedirectMask | \
 			ButtonPressMask | ButtonReleaseMask | ButtonMotionMask)
 
-guint    screen_num_desktops    = 0;
+guint    screen_num_desktops;
-guint    screen_num_monitors    = 0;
+guint    screen_num_monitors;
-guint    screen_desktop         = 0;
+guint    screen_desktop;
 Size     screen_physical_size;
 gboolean screen_showing_desktop;
 DesktopLayout screen_desktop_layout;
-char   **screen_desktop_names = NULL;
+char   **screen_desktop_names;
+Window   screen_support_win;
 
-static Rect  **area = NULL; /* array of desktop holding array of
+static Rect  **area; /* array of desktop holding array of xinerama areas */
-                               xinerama areas */
+static Rect  *monitor_area;
-static Rect  *monitor_area = NULL;
-static Window support_window = None;
 
 #ifdef USE_LIBSN
 static SnMonitorContext *sn_context;
 static int sn_busy_cnt;
-static ObTimer *sn_timer = NULL;
+static ObTimer *sn_timer;
 
 static void sn_event_func(SnMonitorEvent *event, void *data);
 #endif
@@ -55,8 +54,9 @@ static void set_root_cursor();
 
 gboolean screen_annex()
 {
+    XSetWindowAttributes attrib;
     pid_t pid;
-    int i, num_support;
+    gint i, num_support;
     guint32 *supported;
 
     xerror_set_ignore(TRUE);
@@ -79,14 +79,21 @@ gboolean screen_annex()
     PROP_SET32(ob_root, openbox_pid, cardinal, pid);
 
     /* create the netwm support window */
-    support_window = XCreateSimpleWindow(ob_display, ob_root, 0,0,1,1,0,0,0);
+    attrib.override_redirect = TRUE;
+    screen_support_win = XCreateWindow(ob_display, ob_root,
+                                       -100, -100, 1, 1, 0,
+                                       CopyFromParent, InputOutput,
+                                       CopyFromParent,
+                                       CWOverrideRedirect, &attrib);
+    XMapRaised(ob_display, screen_support_win);
 
     /* set supporting window */
-    PROP_SET32(ob_root, net_supporting_wm_check, window, support_window);
+    PROP_SET32(ob_root, net_supporting_wm_check, window, screen_support_win);
 
     /* set properties on the supporting window */
-    PROP_SETS(support_window, net_wm_name, "Openbox");
+    PROP_SETS(screen_support_win, net_wm_name, "Openbox");
-    PROP_SET32(support_window, net_supporting_wm_check, window,support_window);
+    PROP_SET32(screen_support_win, net_supporting_wm_check,
+               window, screen_support_win);
 
     /* set the _NET_SUPPORTED_ATOMS hint */
     num_support = 61;
@@ -212,7 +219,7 @@ void screen_shutdown()
     PROP_ERASE(ob_root, net_supported); /* not without us */
     PROP_ERASE(ob_root, net_showing_desktop); /* don't keep this mode */
 
-    XDestroyWindow(ob_display, support_window);
+    XDestroyWindow(ob_display, screen_support_win);
 
     g_strfreev(screen_desktop_names);
     for (r = area; *r; ++r)

openbox/screen.h

@@ -16,6 +16,8 @@ extern guint screen_num_monitors;
 extern guint screen_desktop;
 /*! Are we in showing-desktop mode? */
 extern gboolean screen_showing_desktop;
+/*! The support window also used for focus and stacking */
+extern Window screen_support_win;
 
 typedef struct DesktopLayout {
     ObOrientation orientation;

openbox/stacking.c

@@ -1,5 +1,6 @@
 #include "openbox.h"
 #include "prop.h"
+#include "screen.h"
 #include "focus.h"
 #include "client.h"
 #include "group.h"
@@ -53,7 +54,7 @@ static void do_restack(GList *wins, GList *before)
     win = g_new(Window, g_list_length(wins) + 1);
 
     if (before == stacking_list)
-        win[0] = focus_backup;
+        win[0] = screen_support_win;
     else if (!before)
         win[0] = window_top(g_list_last(stacking_list)->data);
     else
@@ -267,7 +268,7 @@ void stacking_add(ObWindow *win)
     ObStackingLayer l;
     GList *wins;
 
-    g_assert(focus_backup != None); /* make sure I dont break this in the
+    g_assert(screen_support_win != None); /* make sure I dont break this in the
                                        future */
 
     l = window_layer(win);

plugins/keyboard/keyboard.c

@@ -1,4 +1,5 @@
 #include "kernel/focus.h"
+#include "kernel/screen.h"
 #include "kernel/frame.h"
 #include "kernel/dispatch.h"
 #include "kernel/openbox.h"
@@ -103,7 +104,7 @@ static void grab_keys(gboolean grab)
 {
     GList *it;
 
-    grab_for_window(focus_backup, grab);
+    grab_for_window(screen_support_win, grab);
     for (it = client_list; it; it = g_list_next(it))
         grab_for_window(((ObClient*)it->data)->frame->window, grab);
 }