The returned interface pointer is NOT AddRef'd; the caller should not Release it.
- po:A pointer to an ITrigmlEventHandler object.
- node:The Trigml node that has received the event.
- eventId:The event ID.
- wParam:16-bit event parameter. Meaning is specific to the event.
- dwParam:32-bit event parameter. Meaning is specific to the event.
ITRIGMLEVENTHANDLER_HandleEvent(ITrigmlEventHandler* po, ITrigmlElement* node, AEEEvent eventId, uint16 wParam, uint32 dwParam);
TRUE if the event has been handled. FALSE if the event has not been handled.