Screen 类

下面的代码示例演示如何使用 Screen 类的各种方法和属性。该示例调用 AllScreens 属性来检索连接到系统的所有屏幕的数组。对于每个返回的 Screen，该示例将设备名称、边界、类型、工作区和主屏幕添加到
ListBox。

 1 private void button1_Click(object sender, System.EventArgs e)

 2   {

 3       int index;

 4       int upperBound;

 5

 6       // Gets an array of all the screens connected to the system.

 7

 8

 9       Screen [] screens = Screen.AllScreens;

10       upperBound = screens.GetUpperBound(0);

11

12       for(index = 0; index <= upperBound; index++)

13       {

14

15           // For each screen, add the screen properties to a list box.

16

17

18           listBox1.Items.Add("Device Name: " + screens[index].DeviceName);

19           listBox1.Items.Add("Bounds: " + screens[index].Bounds.ToString());

20           listBox1.Items.Add("Type: " + screens[index].GetType().ToString());

21           listBox1.Items.Add("Working Area: " + screens[index].WorkingArea.ToString());

22           listBox1.Items.Add("Primary Screen: " + screens[index].Primary.ToString());

23

24       }

25

26   }

所谓的分屏或多屏软件，就是把软件中的多个窗体，在主屏幕运行，但是把各个窗体（坐标）移动到各个扩展屏幕位置上如下图所示：

主屏幕（MainForm） index=0	扩展屏幕1 (Form1) index=1
扩展屏幕2 (Form2) index=...	扩展屏幕3 (Form3) index=...

以下介绍最常用的双屏幕显示，也就是左右模式的屏幕显示的方法。

WinForm 的实现办法：

利用WinForm中的Screen类，即可比较方便地实现多窗体分别在多个屏幕上显示。

获取当前系统连接的屏幕数量： Screen.AllScreens.Count();
获取当前屏幕的名称：string CurrentScreenName = Screen.FromControl(this).DeviceName;
获取当前屏幕对象：Screen CurrentScreen = Screen.FromControl(this);
获取当前鼠标所在的屏幕：Screen CurrentScreen = Screen.FromPoint(new Point(Cursor.Position.X, Cursor.Position.Y));
让窗体在第2个屏幕上显示：

this.Left = ((Screen.AllScreens[1].Bounds.Width - this.Width) / 2);

this.Top = ((Screen.AllScreens[1].Bounds.Height - this.Height) / 2);

把任何窗体显示在任何屏幕的方法：

Winform:

1 Screen[] sc;

2             sc = Screen.AllScreens;

3             this.StartPosition = FormStartPosition.Manual;

4             this.Location = new Point(sc[1].Bounds.Left, sc[1].Bounds.Top);

5             // If you intend the form to be maximized, change it to normal then maximized.

6             this.WindowState = FormWindowState.Normal;

7             this.WindowState = FormWindowState.Maximized;

8             MessageBox.Show(this.Handle.ToString());

WPF:

 1 protected override void OnStartup(StartupEventArgs e)

 2         {

 3             base.OnStartup(e);

 4

 5             Window1 w1 = new Window1();

 6             Window2 w2 = new Window2();

 7

 8

 9             Screen s1 = Screen.AllScreens[0];

10             Screen s2 = Screen.AllScreens[1];

11

12             Rectangle r1 = s1.WorkingArea;

13             Rectangle r2 = s2.WorkingArea;

14

15             w1.Top = r1.Top;

16             w1.Left = r1.Left;

17

18             w2.Top = r2.Top;

19             w2.Left = r2.Left;

20

21             w1.Show();

22             w2.Show();

23

24             w2.Owner = w1;

25

26

27         }

height

C#& Screen 类&（&多&屏&幕&开&发）

Screen 类