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C# Screen 类(多屏幕开发)

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         }