I have a PropertyManagerPage with a PropertyManagerPageSelectionbox. The SelectionFilter is set to:

swSelectType_e.swSelVERTICES

swSelectType_e.swSelSKETCHPOINTS

swSelectType_e.swSelEXTSKETCHPOINTS

swSelectType_e.swSelFRAMEPOINT

swSelectType_e.swSelMIDPOINTS

The Selection of the points work except the mid point. The mid point of an edge is highlighted, but after pressing the left mouse button nothing happens. Neither the OnSubmitSelection nor the OnSelectionboxListChanged events are triggered. Mid points of lines are even not highlighted.

How can I select mid points correctly .

Thanks in advance,

Matthias Senff