diff --git a/src/window_gui.h b/src/window_gui.h
--- a/src/window_gui.h
+++ b/src/window_gui.h
@@ -562,6 +562,10 @@ void ResizeButtons(Window *w, byte left,
 
 void ResizeWindowForWidget(Window *w, int widget, int delta_x, int delta_y);
 
+void SetVScrollCount(Window *w, int num);
+void SetVScroll2Count(Window *w, int num);
+void SetHScrollCount(Window *w, int num);
+
 
 /**
  * Sets the enabled/disabled status of a widget.