主WPF窗口下的第二个显示器/电视截图 [英] Screenshot of the main WPF window under second monitor/TV

问题描述

我用我的第二个显示器上，有时在电脑的主监视器应用程序。

我怎样才能得到第二个显示器的屏幕截图？

下面code没有第二个显示器工作...

 显卡GFX;
BMP位图=新位图（Screen.PrimaryScreen.Bounds.Width，Screen.PrimaryScreen.Bounds.Height）;
GFX = Graphics.FromImage（BMP）;
gfx.CopyFromScreen（Screen.PrimaryScreen.Bounds.X，Screen.PrimaryScreen.Bounds.Y，0，0，Screen.PrimaryScreen.Bounds.Size，CopyPixelOperation.SourceCopy）;

MemoryStream的毫秒=新的MemoryStream（）;
bmp.Save（MS，ImageFormat.Jpeg）;
byte []的位图数据= ms.ToArray（）;
 

解决方案

使用 Screen.AllScreens [1] .Bounds 的isntead Screen.PrimaryScreen .Bounds 。

或者更可靠拿到的第一个非主屏幕。

  VAR secondScreen = Screen.AllScreens.Where（屏幕=＆GT;！screen.Primary）.FirstOrDefault（）;
 

检查 secondScreen == NULL 要知道，如果你有一个secondScreen。

修改：
您可能也有兴趣 Screen.FromControl ，让屏幕应用程序正在运行。

I use my application on the second monitor and sometimes at the primary monitor of the computer.

How I can get screenshot of the second monitor?

The following code doesn't work for the second monitor...

Graphics gfx;
Bitmap bmp = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height);
gfx = Graphics.FromImage(bmp);
gfx.CopyFromScreen(Screen.PrimaryScreen.Bounds.X, Screen.PrimaryScreen.Bounds.Y, 0, 0, Screen.PrimaryScreen.Bounds.Size, CopyPixelOperation.SourceCopy);

MemoryStream ms = new MemoryStream();
bmp.Save(ms, ImageFormat.Jpeg);
byte[] bitmapData = ms.ToArray();

解决方案

Use Screen.AllScreens[1].Bounds isntead of Screen.PrimaryScreen.Bounds.

Or more reliable to get the first non Primary Screen.

var secondScreen = Screen.AllScreens.Where(screen => !screen.Primary).FirstOrDefault();

check for secondScreen == null to know if you have a secondScreen.

Edit:
You might also be interested in Screen.FromControl that gives the screen that the application is currently running on.

这篇关于主WPF窗口下的第二个显示器/电视截图的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！