(svn r6680) -Codechange r6679: [train build window] only generate the list when the window data is invalidated or the window is generated, not on each redraw

1 files changed, 1 insertions, 0 deletions

diff --git a/functions.h b/functions.h
index 352f7b962..f79e20cd8 100644
--- a/functions.h
+++ b/functions.h
@@ -168,6 +168,7 @@ void MarkTileDirtyByTile(TileIndex tile);
 void InvalidateWindow(WindowClass cls, WindowNumber number);
 void InvalidateWindowWidget(WindowClass cls, WindowNumber number, byte widget_index);
 void InvalidateWindowClasses(WindowClass cls);
+void InvalidateWindowClassesData(WindowClass cls);
 void DeleteWindowById(WindowClass cls, WindowNumber number);
 void DeleteWindowByClass(WindowClass cls);