How do I write to the HKLM registry?

[catmanjan]

I'm familiar with https://learn.microsoft.com/en-us/windows/msix/desktop/flexible-virtualization

But this doesn't quite do what I want - I want to write to HKLM and have it visible to other apps

I am calling StorageProviderSyncRootManager.Register which does write to HKLM already, but the API does not set all the reg keys I want, so I think my app should already be able to do so...

[hoshiizumiya]

@catmanjan
Do this firstly: https://github.com/SnapHutaoRemasteringProject/Snap.Hutao.Remastered/blob/410d900f4ddf6e7738ee2c3d0cc8fa483e6b2741/src/Snap.Hutao.Remastered/Snap.Hutao.Remastered/Package.appxmanifest#L22
https://github.com/SnapHutaoRemasteringProject/Snap.Hutao.Remastered/blob/410d900f4ddf6e7738ee2c3d0cc8fa483e6b2741/src/Snap.Hutao.Remastered/Snap.Hutao.Remastered/Package.appxmanifest#L69

And there are two ways to use:
C++: https://github.com/SnapHutaoRemasteringProject/Snap.Hutao.Remastered.Native/blob/c2592b2f4361f392337224db853263dfb03b249f/src/Snap.Hutao.Remastered.Native/HutaoNativeRegistryNotification.cpp#L42-L96
C#: https://github.com/SnapHutaoRemasteringProject/Snap.Hutao.Remastered/blob/410d900f4ddf6e7738ee2c3d0cc8fa483e6b2741/src/Snap.Hutao.Remastered/Snap.Hutao.Remastered/UI/Shell/NotifyIconController.cs#L218-L312