--- a/src/window_func.h	Sat May 10 08:58:52 2008 +0000
+++ b/src/window_func.h	Sat May 10 12:30:27 2008 +0000
@@ -9,8 +9,6 @@
 #include "player_type.h"
 
 void SetWindowDirty(const Window *w);
-void SendWindowMessage(WindowClass wnd_class, WindowNumber wnd_num, int msg, int wparam, int lparam);
-void SendWindowMessageClass(WindowClass wnd_class, int msg, int wparam, int lparam);
 
 Window *FindWindowById(WindowClass cls, WindowNumber number);
 void ChangeWindowOwner(PlayerID old_player, PlayerID new_player);
@@ -23,18 +21,20 @@
 void ResetWindowSystem();
 void SetupColorsAndInitialWindow();
 void InputLoop();
-void InvalidateThisWindowData(Window *w);
-void InvalidateWindowData(WindowClass cls, WindowNumber number);
+
+void InvalidateThisWindowData(Window *w, int data = 0);
+void InvalidateWindowData(WindowClass cls, WindowNumber number, int data = 0);
+void InvalidateWindowClassesData(WindowClass cls, int data = 0);
 
 void DeleteNonVitalWindows();
 void DeleteAllNonVitalWindows();
 void HideVitalWindows();
 void ShowVitalWindows();
 
-void InvalidateWindow(WindowClass cls, WindowNumber number);
 void InvalidateWindowWidget(WindowClass cls, WindowNumber number, byte widget_index);
+void InvalidateWindow(WindowClass cls, WindowNumber number);
 void InvalidateWindowClasses(WindowClass cls);
-void InvalidateWindowClassesData(WindowClass cls);
+
 void DeleteWindowById(WindowClass cls, WindowNumber number);
 void DeleteWindowByClass(WindowClass cls);