Hi, I am working on Autoscroll/Panning support, and I need to know how to cancel an event from PreHandleEvent in nsEventStateManager. Is there some function you can call to prevent further processing of an event? I saw in nsPresShell.cpp that where PreHandleEvent is called, it checks to see if the return is NS_OK. But, it seems that no matter what return value is returned from PreHandleEvent, the event is passed to the DOM.
