UxmlElements not supported when using DLLs

Unity: UI Builder

Won't Fix

6.0.X

2022.3.X

2021.3.X

The information provided in the Discussions thread is the way to support the code generated for serialization in DLLs. The code generator needs to run during the DLL compilation process. We plan on adding a documentation page in the manual to make this information more available and we will add versioning on UxmlSerializedData to help detect some issues with generated code.

How to reproduce:
1. Open the attached "IN-85035" project
2. Open the UIBuilder window and observe the “Custom Controls (C#)” drop-down menu under the Library section
3. Open the “MyLibrary” directory under Project files and observe the “TestVisInLibrary.cs” file

Expected result: TestVisInLibrary.cs is visible using the UIBuilder window inside the Editor
Actual result: UxmlElements inside DLLs are unsupported, making TestVisLibrary.cs invisible in the UIBuilder window

Reproducible in: 2021.3.44f1, 2022.3.48f1, 6000.0.21f1

Reproducible on: Windows 10, Windows 11
Not reproducible on: No other environments tested

Workaround: Provided by the developer - https://discussions.unity.com/t/ui-toolkit-serialization-and-library-compilation-dll-support/1524794

UxmlElements not supported when using DLLs

Unity: UI Builder

Won't Fix

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UxmlElements not supported when using DLLs

Unity: UI Builder

Statuses

Won't Fix

Resolution Notes

Description

Prioritise and Follow this issue

Have a workaround or additional info about this issue?