The ThisEvent object represents the ArcPad event that is occurring at a particular time. The ThisEvent object allows an event handler routine to access properties for the current event and pass back values to the object invoking the event.
The Bookmark property is only valid while handling the following events: OnFeatureAdded, OnFeatureChanged, OnFeatureGeometryChanged, OnSelectionChanged, OnVertexEditBegin, OnVertexEditEnd.
The MessageText, MessageType, and Result properties are only valid while handling the OnValidate event.
The ID property is only valid while handling the OnExEvent event.