+ /**
+ * Redraw the GUI picking up new GUI colors.
+ */
+ virtual void redraw ();
+
+ /**
+ * Creates a new dialog box, using the same property format as the
+ * gui/dialogs configuration files. Does not display the
+ * resulting dialog. If a pre-existing dialog of the same name
+ * exists, it will be deleted. The node argument will be stored
+ * in the GUI subsystem using SGPropertNode_ptr reference counting.
+ * It should not be deleted by user code.
+ *
+ * @param node A property node containing the dialog definition
+ */
+ virtual void newDialog (SGPropertyNode* node);
+
+ /**
+ * Display a dialog box.
+ *
+ * At initialization time, the subsystem reads all of the XML
+ * configuration files from the directory $FG_ROOT/gui/dialogs/.
+ * The configuration for each dialog specifies a name, and this
+ * method invokes the dialog with the name specified (if it
+ * exists).
+ *
+ * @param name The name of the dialog box.
+ * @return true if the dialog exists, false otherwise.
+ */
+ virtual bool showDialog (const std::string &name);
+
+
+ /**
+ * Close the currenty active dialog. This function is intended to
+ * be called from code (pui callbacks, for instance) that registers
+ * its dialog object as active via setActiveDialog(). Other
+ * user-level code should use the closeDialog(name) API.
+ *
+ * @return true if a dialog was active, false otherwise
+ */
+ virtual bool closeActiveDialog ();
+
+ /**
+ * Close a named dialog, if it is open.
+ *
+ * @param name The name of the dialog box.
+ * @return true if the dialog was active, false otherwise.
+ */
+ virtual bool closeDialog (const std::string &name);
+
+ /**
+ * Get dialog property tree's root node.
+ * @param name The name of the dialog box.
+ * @return node pointer if the dialog was found, zero otherwise.
+ */
+ virtual SGPropertyNode_ptr getDialogProperties (const std::string &name);
+
+ /**
+ * Return a pointer to the current menubar.
+ */