加载窗口时出现黑色空白窗口WPF

Question

在我的应用程序中，在菜单上单击我们将启动一个窗口。加载时，窗口会变黑几秒钟，然后出现控件。我已附上图片以供参考。请帮帮我 。 。

Answer 1

您是否在项目中导入和使用WindowChrome类（System.Windows.Shell）？当我将这个类导入到我的项目中时，发生了这个问题。

Answer 2

你应该阅读：

How to fix the WPF form resize - controls lagging behind and black background?

你可以改变黑位显示通过调用SetClassLong方法，通过@@ ghord所建议的颜色：

public static class WindowExtensions 
{ 
    private const int GCL_HBRBACKGROUND = -10; 
    private const int COLOR_WINDOW = 5; 

    public static void SetClassLong(this Window window) 
    { 
     //change the background colour of the window to "hide" possible black rendering artifacts 
     IntPtr handle = new WindowInteropHelper(window).EnsureHandle(); 
     if (handle != IntPtr.Zero) 
      SetClassLong(handle, GCL_HBRBACKGROUND, SafeNativeMethods.GetSysColorBrush(COLOR_WINDOW)); 
    } 

    private static IntPtr SetClassLong(IntPtr hWnd, int nIndex, IntPtr dwNewLong) 
    { 
     if (IntPtr.Size > 4) 
      return SafeNativeMethods.SetClassLongPtr64(hWnd, nIndex, dwNewLong); 
     else 
      return new IntPtr(SafeNativeMethods.SetClassLongPtr32(hWnd, nIndex, unchecked((uint)dwNewLong.ToInt32()))); 
    } 
} 

public partial class MainWindow : Window, IViewFor<MainWindowViewModel> 
{ 
    public MainWindow() 
    { 
     InitializeComponent(); 
    } 

    protected override void OnSourceInitialized(EventArgs e) 
    { 
     base.OnSourceInitialized(e); 
     //change the background colour of the window to "hide" possible black rendering artifacts 
     this.SetClassLong(); 
    } 
}