Can auto scrolling be implemented?

I just downloaded Qt and plan on playing around with the code, so I may be able to solve this myself. However, it is such a common feature that I am wondering why it isn't currently implemented? By auto scrolling, I am talking about any time where the mouse is dragged outside of the window, the map should scroll. I do know that I can use the arrow keys, but this seems like a hack.

Is the lack of this feature due to a limitation of Qt or is it just an oversight? It has been a couple of years since I even tried messing with Qt and I really didn't like it when compared to straight C/C++, so my experience with it is greatly limited. I would hate to waste my time with something that cannot be done.

Start from the map editor's mouse-drag behavior and review how Qt reports dragging beyond the window. The requested behavior is automatic map scrolling while the mouse remains outside during a drag; it is done when this works without relying on the arrow keys.