C# 训练场（四）创建系统热键，并向活动窗口输入信息

 本文转载  http://blog.csdn.net/imbiz/article/details/5648682

 

 

练习使用API。

实现以下功能：

1. 设定热键

2. 检测当前活动窗口

3. 向活动窗口发送信息

4. 取消注册热键

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Diagnostics;


namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {

        [System.Runtime.InteropServices.DllImport("user32.dll")]
        public static extern bool RegisterHotKey(
            IntPtr hWnd, // handle to window
            int id, // hot key identifier
            uint fsModifiers, // key-modifier options
            Keys vk // virtual-key code
            );

        [System.Runtime.InteropServices.DllImport("user32.dll")] //申明API函数
        public static extern bool UnregisterHotKey(
        IntPtr hWnd, // handle to window
        int id // hot key identifier
        );


        [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
        public static extern IntPtr GetForegroundWindow();


        public enum KeyModifiers
        {
            None = 0,
            Alt = 1,
            Control = 2,
            Shift = 4,
            Windows = 8
        }


        public Form1()
        {
            InitializeComponent();
            RegisterHotKey(Handle, 150, 4, Keys.A);// 热键一:Shift+A
            RegisterHotKey(Handle, 151, 2|4, Keys.M);//热键一:Ctrl +Shift+M
        //    RegisterHotKey(Handle, 152, 1|2, Keys.Up);// 热键一:Ctrl +Alt+光标上箭头
        //    RegisterHotKey(Handle, 153, 8, Keys.P);// 热键一:Win+P

        }
            protected override void WndProc(ref Message m)//监视Windows消息
        {
            const int WM_HOTKEY = 0x0312;//如果m.Msg的值为0x0312那么表示用户按下了热键
            switch (m.Msg)
            {
                case WM_HOTKEY:
                    ProcessHotkey(m);//按下热键时调用ProcessHotkey()函数
                break;
            }

            base.WndProc(ref m); //将系统消息传递自父类的WndProc
        }

        private void ProcessHotkey(Message m)
        {
            IntPtr id = m.WParam; //IntPtr用于表示指针或句柄的平台特定类型
            //MessageBox.Show(id.ToString());
            string sid = id.ToString();
            switch (sid)
            {
                case "150": opennewtxt(); break;//  热键一:Ctrl+A
                case "151": sendmsg(); break;//热键一:Ctrl +Shift+M
                case "152"://热键一:Ctrl +Alt+光标上箭头
                    this.Visible = true;
                    break;
                case "153"://热键一:Win+P
                    this.Visible = false;
                    break;
            }
        }

        private void opennewtxt()
        {
            Process mytxt = new Process();
            mytxt.StartInfo.FileName = @"notepad.exe";
            mytxt.StartInfo.Arguments = @"D://newtxt.txt";
            mytxt.Start();
            mytxt.WaitForInputIdle(1000);
            SendKeys.SendWait("Hello!");



        }
        private void sendmsg()
        {
            //string proname="";
            Process mypro=null;
            foreach (Process thisproc in Process.GetProcesses())
            {
                if (thisproc.MainWindowHandle.ToInt32() == GetForegroundWindow().ToInt32())
                {
                    //proname = thisproc.ProcessName;
                    mypro = thisproc;
                    break;
                }
            }
            try
            {
                //两种方法
                //string msginfo=@"{ENTER}/sum_{{}i=0{}}{^}{{}/infty{}}{ENTER}";
                SendKeys.Send(@"{ENTER}/begin{{}split{}}{ENTER} &= {ENTER} &= {ENTER}/end{{}split{}}{ENTER}");
                //SendKeys.Send(msginfo);
                //SendKeys.Send(@"/begin{{}split{}}");
                //SendKeys.Send("{ENTER}");
                //SendKeys.Send(@"{(}{)}");
                //SendKeys.Send("{ENTER}");
                //SendKeys.Send(@"/sum_0{^}{{}/infinite{}}");
                //SendKeys.Send("{ENTER}");
                //SendKeys.Send(@"/end{{}split{}}   haha");
                //SendKeys.Send("{ENTER}");
                //测试使用粘贴板
                string msginfo2 = @"/begin{split}"+"/r/n"+@" &= "+"/r/n"+@"/end{split}";
                Clipboard.SetDataObject(msginfo2);
                //SendKeys.Send("^v");

            }
            catch (System.NullReferenceException e)
            {
               // MessageBox.Show(e.Message);
            }
        }

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            UnregisterHotKey(Handle, 150);//卸载第1个快捷键
            UnregisterHotKey(Handle, 151); //缷载第2个快捷键
            UnregisterHotKey(Handle, 152);//卸载第3个快捷键
            UnregisterHotKey(Handle, 153); //缷载第4个快捷键


        }









        }

}

运行结果：

在WORD编辑窗口，按下Ctrl+Shift+M,会在当前光标处输入以下文字：

/begin{/split}

 &=

 &=

/end{/split}