How to migrate to WinUI 3

[LudwigVonB]

Hello,

I migrated my MFC application to be able to use controls from WinUI 2.8 (UWP) by using this tutorial and everything works fine. :)

But now I need to migrate it from WinUI 2.8 to WinUI 3 controls.
So I modified namespace from Windows.UI.* to Microsoft.UI.*, compilation works but when I launch my application I've got an exception 'winrt::hresult_class_not_registered'.

Do you plan to update this tutorial or create a new one to do that?

Regards.

---

Document Details

⚠ Do not edit this section. It is required for learn.microsoft.com ➟ GitHub issue linking.

• ID: 8f2fc66b-ffa8-5128-8658-a8ea1d064e47
• Version Independent ID: ce50830e-9947-ad68-709c-1e3fd049bb71
• Content: Using the WinRT XAML hosting API in a C++ desktop (Win32) app - Windows apps
• Content Source: hub/apps/desktop/modernize/using-the-xaml-hosting-api.md
• Product: reunion
• Technology: apps
• GitHub Login: @Karl-Bridge-Microsoft
• Microsoft Alias: kbridge

[LudwigVonB]

Any update ?

[Karl-Bridge-Microsoft]

Hi @LudwigVonB - thanks for notifying us of this issue. I've added a work item to my backlog to address this request. I can't provide an ETA due to other priorities but will update this issue when appropriate.