LongAndDragTrackingFilter
class LongAndDragTrackingFilter : public BMessageFilter {
LongAndDragTrackingFilter(
~LongAndDragTrackingFilter();
using BPrivate::LongAndDragTrackingFilter;
LongAndDragTrackingFilter::LongAndDragTrackingFilter(uint32 longMessageWhat,
LongAndDragTrackingFilter::~LongAndDragTrackingFilter()
LongAndDragTrackingFilter::_StopTracking()
LongAndDragTrackingFilter::Filter(BMessage* message, BHandler** target)
AddFilter(new LongAndDragTrackingFilter(kMsgMouseLongDown, kMsgMouseDragged));