C#多屏显示实现

Winform窗口实现多显示屏显示的2种方法

C# winform 双屏显示

C#设置双屏显示模式

Winform窗口实现多显示屏显示的2种方法

一台主机连接了2台显示器（2个显卡），要求一个程序的两个窗体在不同的显示器上显示：显示器1 显示From1，显示器2  显示From2。代码及说明如下

Form1不需要变更代码，From2添加如下代码：

// 方法一：

From2 frm2 = new From2();

if (Screen.AllScreens.Count() != 1)

{

  frm2.Left = Screen.AllScreens[0].Bounds.Width;

  frm2.Top = 0;

  frm2.Size = new System.Drawing.Size(Screen.AllScreens[1].Bounds.Width, Screen.AllScreens[1].Bounds.Height);

}

// 方法二：

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

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

   this.Size = new System.Drawing.Size(Screen.AllScreens[1].Bounds.Width, Screen.AllScreens[1].Bounds.Height);

C# winform 双屏显示

双屏显示1

// 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);

        private void showOnMonitor(int showOnMonitor)

        {

            Screen[] sc;

            sc = Screen.AllScreens;

            if (showOnMonitor >= sc.Length)

            {

                showOnMonitor = 0;

            }

            this.FormBorderStyle = FormBorderStyle.None; //无边框全屏显示

            this.StartPosition = FormStartPosition.Manual;

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

            //this.Location = new Point(((sc[showOnMonitor].Bounds.Width-this.Width)/2), ((sc[showOnMonitor].Bounds.Height-this.Height)/2));

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

            //this.WindowState = FormWindowState.Normal;

            this.WindowState = FormWindowState.Maximized;//最大化窗口

        }

如果接双显卡时showOnMonitor 参数等于0为主屏，1为扩展屏

双屏显示2

private void showOnMonitor2()

       {

           Screen[] sc;

            sc = Screen.AllScreens;

           //get all the screen width and heights 

            Form1 f = new Form1();

            f.FormBorderStyle = FormBorderStyle.None;

             f.Left = sc[1].Bounds.Width;

            f.Top = sc[1].Bounds.Height;

           f.StartPosition = FormStartPosition.Manual;

            f.Location = sc[1].Bounds.Location;

            Point p = new Point(sc[1].Bounds.Location.X, sc[1].Bounds.Location.Y);

             f.Location = p;

             f.WindowState = FormWindowState.Maximized;

             f.Show();

         }

 接入双显卡时sc[0]为主屏、sc[1]扩展屏

一个窗体双屏显示

his.Location = new Point(0,0);            

            Screen[] sc;

            sc = Screen.AllScreens;

            this.Width = (sc[0].Bounds.Width + sc[1].Bounds.Width);//+20;

            this.Height = (sc[0].Bounds.Height); //+200;

            this.FormBorderStyle = FormBorderStyle.None; //边框样式

            webBrowser1.Width = sc[0].Bounds.Width;

            webBrowser1.Height = sc[0].Bounds.Height;

            webBrowser1.Location = new Point(sc[0].Bounds.Location.X, sc[0].Bounds.Location.Y);            

            webBrowser1.Url = new Uri("http://www.google.com.hk");

            webBrowser2.Width = sc[1].Bounds.Width;

            webBrowser2.Height = sc[1].Bounds.Height;

            webBrowser2.Location = new Point(sc[1].Bounds.Location.X, sc[1].Bounds.Location.Y);

            webBrowser2.Url = new Uri("http://www.baidu.com");

C#设置双屏显示模式

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Runtime.InteropServices;

namespace RecordSystem.Common

{

    public static class ScreenHelper

    {

        private const uint SDC_APPLY = 0x00000080;

        private const uint SDC_TOPOLOGY_INTERNAL = 0x00000001;

        private const uint SDC_TOPOLOGY_CLONE = 0x00000002;

        /// <summary>

        /// 扩展模式

        /// </summary>

        private const uint SDC_TOPOLOGY_EXTEND = 0x00000004;

        [DllImport("user32.dll", CharSet = CharSet.Unicode)]

        private static extern long SetDisplayConfig(uint numPathArrayElements, IntPtr pathArray, uint numModeArrayElements,

                                                    IntPtr modeArray, uint flags);

        /// <summary>

        /// 设置屏幕的显示模式

        /// </summary>

        /// <param name="displayModel"></param>

        /// <returns></returns>

        private static bool SetScreen(uint displayModel)

        {

            return SetDisplayConfig(0, IntPtr.Zero, 0, IntPtr.Zero, SDC_APPLY | displayModel) == 0;

        }

        /// <summary>

        /// 设置屏幕的显示模式

        /// </summary>

        /// <param name="type">模式(0 - 主屏  1 - 双屏复制  2 - 双屏扩展</param>

        /// <returns></returns>

        public static bool SetScreenMode(int type)

        {

            uint smode ;

            switch (type)

            {

                case 0:

                    smode =  SDC_APPLY | SDC_TOPOLOGY_INTERNAL ;

                    break;

                case 1:

                    smode =  SDC_APPLY | SDC_TOPOLOGY_CLONE ;

                    break;

                case 2:

                    smode =  SDC_APPLY | SDC_TOPOLOGY_EXTEND ;

                    break;

                default :

                    smode =  SDC_APPLY | SDC_TOPOLOGY_INTERNAL ;

                    break;

            }

            return SetDisplayConfig(0, IntPtr.Zero, 0, IntPtr.Zero, smode) == 0;

        }

    }