C# 训练场（四）创建系统热键，并向活动窗口输入信息

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}