Detect dark mode

[FRFR1426]

Is there a way with the API to detect that the UI is in dark mode?

[FRFR1426]

I can read /Categories/Category/Property/CurrentSkin/Value (1: Dark, 2:Light) in %AppData%\Autodesk\Autodesk Vault Professional 2023\ApplicationPreferences.xml. But I'll only be able to switch the colors on the next restart.

[Markus.Koechl · Accepted solution]

You can read the current theme on startup and establish an event handler to react whenever the user changed it.

void IExplorerExtension.OnStartup(IApplication application)
{
    mApplication = application;

    mCurrentTheme = VDF.Forms.Library.CurrentTheme.ToString();
    VDF.Forms.Library.ThemeChanged += ThemeChanged;
.....
}

        private void ThemeChanged(object? sender, Library.UITheme e)
        {
            mCurrentTheme = VDF.Forms.Library.CurrentTheme.ToString().ToLower();
        }

 Extend the ThemChanged with your needs, like updating icons, etc..

[FRFR1426]

Note that this property (CurrentTheme) and this event (ThemeChanged) have been added in the 2024 version of the API. I'm on 2023...