屏幕截圖上的窗口沒有消失 (Window not disappearing on Screenshot)

問題描述

屏幕截圖上的窗口沒有消失 (Window not disappearing on Screenshot)

我想在我按下窗口上的按鈕時截取屏幕截圖。問題是，在截屏之前窗口會消失。

這是我的代碼：

MainWindow:

private void OnButtonScreenshotClick(object sender, RoutedEventArgs routedEventArgs)
{
    this.Visibility = Visibility.Hidden;
    ScreenCapture capture = new ScreenCapture();
    this.Close();
    capture.Show();      
}

ScreenCapture（顯示屏幕截圖）

public ScreenCapture()
{
    InitializeComponent();
    this.ScreenCaptureImage.Source = Screenshot.TakeFullScreenshot(width, height);
}

如您所見，我嘗試在初始化新的 ScreenCapture‑Window 之前隱藏窗口。我還嘗試使用 Thread.Sleep 延遲，但這也不起作用。

這是我的截圖代碼：

public static ImageSource TakeFullScreenshot(int width, int height)
{
   Image bitmap = new Bitmap(width, height);
    {
        using (Graphics graphics = Graphics.FromImage(bitmap))
        {
            graphics.CopyFromScreen(new Point(0, 0), new Point(0, 0), bitmap.Size);
        }
    }
    return GetImageStream(bitmap);
}

private static BitmapSource GetImageStream(Image myImage)
{
    var bitmap = new Bitmap(myImage);
    IntPtr bmpPt = bitmap.GetHbitmap();
    BitmapSource bitmapSource =
    System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(
          bmpPt,
          IntPtr.Zero,
          Int32Rect.Empty,
          BitmapSizeOptions.FromEmptyOptions());
    //freeze bitmapSource and clear memory to avoid memory leaks
    //bitmapSource.Freeze();
    //DeleteObject(bmpPt);
    return bitmapSource;
}

有什麼建議嗎？

參考解法

方法 1:

use this instead of this.Close();

this.Hide();

(by FKutsche、Noxious Reptile)

參考文件

1. Window not disappearing on Screenshot (CC BY‑SA 2.5/3.0/4.0)