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Sep 5, 2013

I have a piece of code that needs closed polylines.

I use the following selectionfilter to filter the selection so I can only select closed polylines:

Dim sf As New SelectionFilter(New TypedValue() {New TypedValue(0, "LWPOLYLINE"), New TypedValue(70, 1)})
 
Today I noticed that in some drawings this filter won't select all the closed polylines for me.

After some experimenting I found the 'linetype generation' property of the polylines to be the problem. If this is enabled the above filter will not let me select a closed polyline. If I disable it, there is no problem.

How can I make my code for selecting closed polylines more robust? Is there a 'TypedValue' for closed polylines with the linetype generation enabled?

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