Windows9xClassicWpf

The windows 9x classic window style for wpf.

Screenshot

Instruction manual

Add project reference which is Windows9xClassic.
Edit your project's App.xaml like this:

<Application.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="/PresentationFramework.Classic;component/themes/Classic.xaml" />
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
</Application.Resources>

Finally, you can use Windows9xClassicWindow in main window xaml like this:

<win9x:Windows9xClassicWindow
    ...
    xmlns:win9x="clr-namespace:Windows9xClassic;assembly=Windows9xClassic"
    ...>
</win9x:Windows9xClassicWindow>

Thanks

https://github.com/Ciastex/Windows95-WPF
https://qiita.com/nia_tn1012/items/dad2ad412d648401600f