捕获最小化远程桌面的屏幕截图
我有以下 C# 代码，用于捕获远程桌面 (RDP) 会话内的屏幕截图。当会话处于活动状态时，它工作正常，但如果我最小化会话，则会因无效句柄异常而失败。
有什么方法可以实现此功能，或者当会话最小化时屏幕基本上“消失”了？
string filename = @"C:\Snap.png";
Size bitmapSize = new Size( Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height );
using (Bitmap bitmap = new Bitmap(bitmapSize.Width, bitmapSize.Height, PixelFormat.Format24bppRgb))
using (Graphics graphics = Graphics.FromImage(bitmap))
{
graphics.CopyFromScreen( // Exception thrown here
new Point(0, 0),
new Point(0, 0),
bitmapSize);
bitmap.Save(filename, ImageFormat.Png);
}
I have the following C# code, which I am using to capture a screenshot inside a remote desktop (RDP) session. It works fine when the session is active, but fails with an invalid handle exception if I minimize the session.
Is there any way to make this work, or is the screen essentially "gone" when the session is minimized?
string filename = @"C:\Snap.png";
Size bitmapSize = new Size( Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height );
using (Bitmap bitmap = new Bitmap(bitmapSize.Width, bitmapSize.Height, PixelFormat.Format24bppRgb))
using (Graphics graphics = Graphics.FromImage(bitmap))
{
graphics.CopyFromScreen( // Exception thrown here
new Point(0, 0),
new Point(0, 0),
bitmapSize);
bitmap.Save(filename, ImageFormat.Png);
}
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您必须暂时恢复窗口，捕获并再次最小化它。 此链接展示了如何静默执行此操作
You have to temporarily restore the window, capture, and minimize it again. This link shows how to do it silently