CommandManager Pick not selecting ArcDimensionalContraint

[bradeneuropeArthur]

Why is this not selecting ArcDimensionalConstraints in a sketch:

Dim cmd As CommandManager = ThisApplication.CommandManager
Dim sp1 As Object = cmd.Pick(Inventor.SelectionFilterEnum.kAllEntitiesFilter, "Select")
msgbox(sp1.Type)

[Michael.Navara]

It looks like this entity is not supported by API.

Here is modified code for pre-selected entities

Dim part As PartDocument = ThisDoc.Document

Dim selection As SelectSet = part.SelectSet
If selection.Count = 0 Then
	Logger.Info("Nothing selected")
	Return
End If

Dim firstSelectedObject As Object = selection.Item(1)
If firstSelectedObject Is Nothing Then
	Logger.Error("Unsupported")
Else
	Dim objectType As ObjectTypeEnum = firstSelectedObject.Type
	logger.info(objectType.ToString())
End If

[WCrihfield]

It is very strange that we can access, interact with, and make changes to these types of objects through 'normal' Inventor API means, there is an Inventor API object type for them ArcLengthDimConstraint, which is derived from the base class DimensionConstraint.  Not only that, but this object type is also included in the main ObjectTypeEnum as 'kArcLengthDimConstraintObject' (and 'kArcLengthDimConstraintProxyObject').  And we do have something in the SelectionFilterEnum for this object's base Type 'kSketchDimConstraintFilter', which will let us select those other variations of these types of objects, but just not this one specific sub type of them.  Even using the 'Pre-Select' method to select them, then inspecting their Type, it recognizes that 'something' was pre-selected, because the SelectSet is more than one, but then that one object's 'TypeName(oObj) = "Nothing", and throws an error when trying to get its ObjectTypeEnum variation, even though there is a value for them.

This really feels like there is a bug in this area of the Inventor API, or maybe some of the supporting source code needs to be updated to include 'selection' support for that sub type variation, since we can select the other sub types of the same base type.

By the way, this is sort of connected to this other recent forum post:  How to edit dimensional constrain with the Inventor Dialog showing 

I 'tagged' Mike Deck from that conversation, to see if he may be able to shed some light on this odd situation.

[bradeneuropeArthur]

Thanks @WCrihfield,

That is indeed my question how to add the newly created ArcDimConstrain to the selectset and edit it.

Because the add to the selectset is not possible these posts are related indeed.

@johnsonshiue do you and your team have any suggestions and or may confirm the bug?

[MjDeck]

@bradeneuropeArthur and @WCrihfield - I'm looking into this. Since there is an API object (ArcLengthDimConstraint), the Pick function should work on it. I'll see if this is a known issue.

[bradeneuropeArthur]

That would be great 

[MjDeck]

It looks like this was not previously a known issue. It is now: INVGEN-82862.
Thanks for finding this.

[bradeneuropeArthur]

You are more than welcome Mike,

Could you please inform us when things have been resolved?

Great for taking this seriously.