(svn r25292) -Feature: Save stickyness of windows when Ctrl+Clicking the sticky button.

src/window_gui.h

@@ -181,6 +181,8 @@ struct WindowDesc : ZeroedMemoryAllocator {
 	const NWidgetPart *nwid_parts; ///< Nested widget parts describing the window.
 	int16 nwid_length;             ///< Length of the #nwid_parts array.
 
+	bool pref_sticky;              ///< Preferred stickyness.
+
 	static void LoadFromConfig();
 	static void SaveToConfig();
 };
@@ -508,6 +510,8 @@ public:
 	 */
 	virtual void OnInit() { }
 
+	virtual void ApplyDefaults();
+
 	/**
 	 * Compute the initial position of the window.
 	 * @param sm_width      Smallest width of the window.