# Object forwarded to DLL-plugin as by copy(clone) or reference?

**URL:** <https://community.freefem.org/t/object-forwarded-to-dll-plugin-as-by-copy-clone-or-reference/4108>\
**Category:** General Discussion\
**Created:** [October 20, 2025, 11:41am UTC](https://community.freefem.org/t/object-forwarded-to-dll-plugin-as-by-copy-clone-or-reference/4108 "2025-10-20T11:41:03Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![MBK](https://avatars.discourse-cdn.com/v4/letter/m/838e76/32.png) [@MBK](https://community.freefem.org/u/MBK)\
**Post date:** [October 20, 2025, 11:41am UTC](https://community.freefem.org/t/object-forwarded-to-dll-plugin-as-by-copy-clone-or-reference/4108/1 "2025-10-20T11:41:03Z")

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Hello!

When I have an object in FreeFEM++ (like a vertex) from a mesh, and deliver or forward this (vertex-)object to my C++ DLL (plugin), is this forwarded by copy or by reference?  
Will the (vertex-)object only be a cloned object?

Greetings

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<div class="post-metadata">

**Author:** ![MBK](https://avatars.discourse-cdn.com/v4/letter/m/838e76/32.png) [@MBK](https://community.freefem.org/u/MBK)\
**Post date:** [October 20, 2025, 4:45pm UTC](https://community.freefem.org/t/object-forwarded-to-dll-plugin-as-by-copy-clone-or-reference/4108/2 "2025-10-20T16:45:42Z")

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Ok.  
I think it’s by design only possible via reference.  
Good.

Greetings