Make the MenuScrollView a fixed size...

instead of trying to make it follow fExpando just make it a fixed
size on creation. It is invisible and extends to the bottom of the
screen. fExpando grows inside it, and the window follows fExpando.
When the window grows taller than the screenframe the arrows are
added. You can scroll with the mouse wheel, but I haven't yet gotten
scrolling to work from clicking. Deskbar still crashes when going
from Mini mode to vertical expando mode. I have no idea why.

headers/os/interface/MenuScrollView.h

@@ -16,17 +16,17 @@
 class BLayout;
 class BMenu;
 class BMenuScroller;
+class BPoint;
 
 
 class BMenuScrollView : public BView {
 public:
-								BMenuScrollView(BMenu* menu);
+								BMenuScrollView(BRect frame, BMenu* menu);
 	virtual						~BMenuScrollView();
 
 	virtual	void				AttachedToWindow();
 	virtual	void				DetachedFromWindow();
-	virtual	void				Draw(BRect updateRect);
-	virtual	void				FrameResized(float newWidth, float newHeight);
+	virtual	void				MouseDown(BPoint where);
 
 				void			AttachScrollers();
 				void			DetachScrollers();
@@ -34,6 +34,7 @@ public:
 
 				void			SetSmallStep(float step);
 				void			GetSteps(float* _smallStep, float* _largeStep) const;
+
 				bool			CheckForScrolling(const BPoint& cursor);
 				bool			TryScrollBy(const float& step);