Selection of multiple nested entities

[Anonymous]

There are blocks in the drawing, each containing several nested entities. Need a command which would find all the nested entities which got into the selection area provided by user (not necessary to select entities, just get the ids). GetNestedEntity() does what I need but for a single entity only. 

Selection of 'Trim' command does exactly what I need. How could I achieve the same behaviour?

Thank you.

[Alexander.Rivilis]

---

@Anonymous wrote:

... not necessary to select entities, just get the ids ...

---

It is easy to iterate BlockTableRecode and get all ObjectId's of subentities (except constant AttributeDefinition) 

[Anonymous]

I don't need all subentities, just those selected by user.

[Alexander.Rivilis]

Ok. What about Editor.GetSelection with argument PromptSelectionOptions with properties AllowSubSelections and ForceSubSelections equal true?

[Anonymous]

Doesn't work. Even blocks can not be selected in this case.

Have found similar question here, but it was not answered 😞

http://forums.autodesk.com/t5/NET/Select-Nested/m-p/2046216/highlight/true#M7899

[Alexander.Rivilis]

It is look you are right. IMHO only way is using pure ObjectARX (not AutoCAD .NET API) like this: http://adndevblog.typepad.com/autocad/2012/08/acedssget-multi-select-in-n-mode.html

Or using P/Invoke in .NET to call acedSSGet(L"_N:U:D",...); 

[Civil3DReminders_com]

Alexander.Rivilis any chance of getting the sample code from the dead link from the comment in the linked post?

http://adn-cis.org/forum/index.php?topic=7683.msg25135#msg25135

Thank you

[norman.yuan]

@Civil3DReminders_com :

If you are still interested in selecting multiple nested entities, see if these 2 articles are of help (pure .NET API solution):

https://drive-cad-with-code.blogspot.com/2019/08/select-multiple-nested-entities-1.html

https://drive-cad-with-code.blogspot.com/2019/08/selecting-multiple-nested-entities-2-of.html