Add gdk_window_is_destroyed

gdk/gdk.symbols

@@ -701,6 +701,7 @@ gdk_window_get_toplevels
 gdk_window_get_update_area
 gdk_window_get_user_data
 gdk_window_get_window_type
+gdk_window_is_destroyed
 gdk_window_invalidate_maybe_recurse
 gdk_window_invalidate_rect
 gdk_window_invalidate_region

gdk/gdkwindow.c

@@ -2096,6 +2096,20 @@ gdk_window_get_window_type (GdkWindow *window)
   return GDK_WINDOW_TYPE (window);
 }
 
+/**
+ * gdk_window_is_destroyed:
+ * @window: a #GdkWindow
+ *
+ * Check to see if a window is destroyed..
+ *
+ * Return value: %TRUE if the window is destroyed
+ **/
+gboolean
+gdk_window_is_destroyed (GdkWindow *window)
+{
+  return GDK_WINDOW_DESTROYED (window);
+}
+
 /**
  * gdk_window_get_position:
  * @window: a #GdkWindow

gdk/gdkwindow.h

@@ -330,6 +330,7 @@ GdkWindow*    gdk_window_new                   (GdkWindow     *parent,
                                                 gint           attributes_mask);
 void          gdk_window_destroy               (GdkWindow     *window);
 GdkWindowType gdk_window_get_window_type       (GdkWindow     *window);
+gboolean      gdk_window_is_destroyed          (GdkWindow     *window);
 GdkWindow*    gdk_window_at_pointer            (gint          *win_x,
                                                 gint          *win_y);
 void          gdk_window_show                  (GdkWindow     *window);