Q:

Orchestra. MahApps custom window

I'm trying to create custom MahApps. Metro window with Orchestra framework. 
I have copied currennt ShellWindow content (both view + code behind) and created my own Window.  Then in App.xaml.cs I have used my window instead of ShellWindow like this:
shellService. CreateWithSplash<MyShellWindowView>()

And problem is, that this window is not correctly styled (for example, minimize/max/close buttons)

Here's my window:
<orchestra:MetroDataWindow x:Class="CatelApp. Views. MyShellWindowView"
                         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
                         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
                         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                         xmlns:catel="http://catel.codeplex.com"
                         xmlns:orchestra="https://github.com/orcomp/orchestra"
                         SaveWindowPosition="False" d:DesignHeight="696" d:DesignWidth="480" mc:Ignorable="d">

  <orchestra:MetroDataWindow. Resources>
    <ResourceDictionary>
      <Style TargetType="catel:TabControl" BasedOn="{StaticResource {x:Type TabControl}}" />
    </ResourceDictionary>
  </orchestra:MetroDataWindow. Resources>

  <Border x:Name="border" BorderThickness="1">
    <DockPanel LastChildFill="True" Margin="15, 5, 15, 5">

      <StatusBar x:Name="statusBar" DockPanel. Dock="Bottom">
        <orchestra:AnimatingTextBlock x:Name="statusTextBlock" HorizontalAlignment="Left" VerticalAlignment="Center">
          <orchestra:AnimatingTextBlock. ShowStoryboard>
            <Storyboard>
              <DoubleAnimation Storyboard. TargetProperty="Opacity" To="1.0" Duration="0:0:0.2"/>
            </Storyboard>
          </orchestra:AnimatingTextBlock. ShowStoryboard>
          <orchestra:AnimatingTextBlock. HideStoryboard>
            <Storyboard>
              <DoubleAnimation Storyboard. TargetProperty="Opacity" To="0.0" Duration="0:0:0.2"/>
            </Storyboard>
          </orchestra:AnimatingTextBlock. HideStoryboard>
        </orchestra:AnimatingTextBlock>
      </StatusBar>

      <ContentControl x:Name="contentControl" />
    </DockPanel>
  </Border>

</orchestra:MetroDataWindow>

And code behind
namespace CatelApp. Views
{
    /// <summary>
    /// Interaction logic for MyShellWindowViewModel.xaml
    /// </summary>
    public partial class MyShellWindowView : MetroDataWindow, IShell
    {
        #region Constructors

        /// <summary>
        /// Initializes a new instance of the <see cref="ShellWindow"/> class. 
        /// </summary>
        public MyShellWindowView()
        {
            var serviceLocator = ServiceLocator. Default;

            var themeService = serviceLocator. ResolveType<IThemeService>();
            ThemeHelper. EnsureApplicationThemes(GetType().Assembly, themeService. ShouldCreateStyleForwarders());

            MahAppsHelper. ApplyTheme();

            InitializeComponent();

            var accentColorBrush = ThemeHelper. GetAccentColorBrush();
            border. BorderBrush = accentColorBrush;

            var statusService = serviceLocator. ResolveType<IStatusService>();
            statusService. Initialize(statusTextBlock);

            var commandManager = serviceLocator. ResolveType<ICommandManager>();
            var flyoutService = serviceLocator. ResolveType<IFlyoutService>();
            var mahAppsService = serviceLocator. ResolveType<IMahAppsService>();

            serviceLocator. RegisterInstance<IAboutInfoService>(mahAppsService);

            var flyouts = new FlyoutsControl();
            foreach (var flyout in flyoutService. GetFlyouts())
            {
                flyouts. Items. Add(flyout);
            }

            Flyouts = flyouts;

            var windowCommands = mahAppsService. GetRightWindowCommands();

            if (mahAppsService. GetAboutInfo() ! = null)
            {
//              var aboutWindowCommand = WindowCommandHelper. CreateWindowCommandButton("appbar_information", "about");

//              var aboutService = serviceLocator. ResolveType<IAboutService>();
//              commandManager. RegisterAction("Help. About", aboutService. ShowAbout);
//              aboutWindowCommand. Command = commandManager. GetCommand("Help. About");

//              windowCommands. Items. Add(aboutWindowCommand);
            }

            RightWindowCommands = windowCommands;

            var mainView = mahAppsService. GetMainView();
            contentControl. Content = mainView;

            SetBinding(TitleProperty, new Binding("ViewModel. Title") {Source = mainView});
        }

        #endregion
    }
}

A:

Did you include the MahApps themes in your app resources?  For example, see the code below:

<ResourceDictionary. MergedDictionaries>
    <ResourceDictionary Source="/Resources/Icons.xaml" />

    <ResourceDictionary Source="pack://application:,,,/MahApps. Metro;component/Styles/Controls.xaml" />
    <ResourceDictionary Source="pack://application:,,,/MahApps. Metro;component/Styles/Fonts.xaml" />
    <ResourceDictionary Source="pack://application:,,,/MahApps. Metro;component/Styles/Colors.xaml" />

    <ResourceDictionary Source="pack://application:,,,/MahApps. Metro;component/Styles/Controls. AnimatedTabControl.xaml" />
</ResourceDictionary. MergedDictionaries>

