WPF custom title bar

[MichelMichels]

Does anyone have a working custom title bar in WPF? I tried putting one in my Main window, but it gets removed on startup.

[MichelMichels]

I managed to write it myself with a custom MvxWpfViewPresenter.
This code expects a panel directly inside MainWindow and child ContentControl with x:Name="MvxContent".

public class CustomTitleBarWpfViewPresenter : MvxWpfViewPresenter
    {
        public CustomTitleBarWpfViewPresenter(ContentControl root) : base(root)
        {
        }

        protected override Task<bool> ShowContentView(FrameworkElement element, MvxContentPresentationAttribute attribute, MvxViewModelRequest request)
        {
            var contentControl = FrameworkElementsDictionary.Keys.FirstOrDefault(w => (w as MvxWindow)?.Identifier == attribute.WindowIdentifier) ?? FrameworkElementsDictionary.Keys.Last();

            if (!attribute.StackNavigation && FrameworkElementsDictionary[contentControl].Any())
                FrameworkElementsDictionary[contentControl].Pop(); // Close previous view

            FrameworkElementsDictionary[contentControl].Push(element);
            if (contentControl.Content is Panel panel)
            {
                var mvxContent = panel.Children.OfType<ContentControl>().SingleOrDefault(x => x.Name == "MvxContent");
                if(mvxContent != null)
                {
                    mvxContent.Content = element;
                }
            }
            else
            {
                contentControl.Content = element;
            }
            return Task.FromResult(true);
        }
    }