在不同线程中使用时，MahApps.Metro窗口在版本2.2.0中不显示

问题描述

我有一个自定义都市窗口，它充当启动屏幕。这是在其他线程中启动的。但是，调用Show（）函数后，执行不会发生。我的意思是窗口没有显示。

protected async override void OnStartup(StartupEventArgs e)
{
    string g = null;

    var t = JsonConvert.SerializeObject(g);

    bool creatednew;
    Mutex mutex = new Mutex(true,"WpfApp1",out creatednew);
    if (!creatednew)
    {
        MessageBox.Show("Not allowed");
        this.Shutdown();
    }
    else
    {
        Window1 testwindow = null;
        var m1 = new ManualResetEvent(false);
        var t1 = new Thread(() =>
        {
            testwindow = new Window1();
            testwindow.Resources.MergedDictionaries.Add(new ResourceDictionary { Source = new Uri("/PresentationFramework.Aero,Version=4.0.0.0,Culture=neutral,PublicKeyToken=31bf3856ad364e35,ProcessorArchitecture=MSIL;component/themes/aero.normalcolor.xaml",UriKind.RelativeOrAbsolute) });
            testwindow.Resources.MergedDictionaries.Add(new ResourceDictionary { Source = new Uri("pack://application:,/MahApps.Metro;component/Styles/Controls.xaml") });
            testwindow.Resources.MergedDictionaries.Add(new ResourceDictionary { Source = new Uri("pack://application:,/MahApps.Metro;component/Styles/Fonts.xaml") });
            testwindow.SetResourceReference(MetroWindow.BorderBrushProperty,"AccentColorBrush");
            testwindow.Show();
            m1.Set();
            // When the window closes,shut down the dispatcher
            testwindow.Closed += (s,k) =>
            {
                dispatcher.Currentdispatcher.BeginInvokeShutdown(dispatcherPriority.Background);
            };
            // Start the dispatcher Processing
            dispatcher.Run();
        });
        t1.SetApartmentState(ApartmentState.STA);
        t1.IsBackground = true;
        t1.Start();
        m1.WaitOne();

        Current.MainWindow = new MainWindow();
        Current.MainWindow.ShowDialog();
        base.OnStartup(e);
    }
}

如果我使用wpf窗口，则一切正常。最糟糕的是，如果我使用1.5.6.0版本，而没有将资源分配给tempWindow并在app.xaml中定义资源，则相同的代码将起作用。

        <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" />
        <!-- Accent and AppTheme setting -->
        <ResourceDictionary Source="pack://application:,/MahApps.Metro;component/Styles/Accents/Blue.xaml" />
        <ResourceDictionary Source="pack://application:,/MahApps.Metro;component/Styles/Accents/BaseLight.xaml" />

解决方法

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