加載窗口時出現黑色空白窗口WPF

Question

在我的應用程序中，在菜單上單擊我們將啓動一個窗口。加載時，窗口會變黑幾秒鐘，然後出現控件。我已附上圖片以供參考。請幫幫我 。 。

Answer 1

您是否在項目中導入和使用WindowChrome類（System.Windows.Shell）？當我將這個類導入到我的項目中時，發生了這個問題。

Answer 2

你應該閱讀：

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

你可以改變黑位顯示通過調用SetClassLong方法，通過@@ ghord所建議的顏色：

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(); 
    } 
}