KB10714 - Change default mouse handling upon editing.
An example: Customize vector digitizing procedure to always add a final point (vertex) at the completion end of each drawn line shape.
Try setting:
GIS.Editor.Mode = gisEditorModeAfterActivePoint ;
Or simply reverse the default handling by:
GIS.Editor.Mode = gisEditorModeReversed ;
Created: September 26, 2006, Modified: September 21, 2015