C# 模擬鍵盤輸入 傳送至不同的應用程式 (小算盤為例)

HOW TO：以程式碼模擬滑鼠和鍵盤事件

SendKeys.Send 方法

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; //For DllImport

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
       

        public Form1()
        {
            InitializeComponent();
        }

        // Get a handle to an application window.
        [DllImport("USER32.DLL", CharSet = CharSet.Unicode)]
        public static extern IntPtr FindWindow(string lpClassName,
            string lpWindowName);

        // Activate an application window.
        [DllImport("USER32.DLL")]
        public static extern bool SetForegroundWindow(IntPtr hWnd);


        // Send a key to the button when the user double-clicks anywhere 
        // on the form.
        private void Form1_DoubleClick(object sender, EventArgs e)
        {
            // Send the enter key to the button, which raises the click 
            // event for the button. This works because the tab stop of 
            // the button is 0.
            SendKeys.Send("{ENTER}");
        }
        private void button1_Click(object sender, EventArgs e)
        {
            // Get a handle to the Calculator application. The window class
            // and window name were obtained using the Spy++ tool.
            IntPtr calculatorHandle = FindWindow(null, "小算盤");

            // Verify that Calculator is a running process.
            if (calculatorHandle == IntPtr.Zero)
            {
                MessageBox.Show("Calculator is not running.");
                return;
            }

            // Make Calculator the foreground application and send it 
            // a set of calculations.
            SetForegroundWindow(calculatorHandle);
            SendKeys.SendWait("111");
            SendKeys.SendWait("*");
            SendKeys.SendWait("11");
            SendKeys.SendWait("=");                
        }
    }
}

FindWindow 尋找視窗 改記事本

// Get a handle to the notepad application. The window class
// and window name were obtained using the Spy++ tool.
IntPtr notepadHandle = FindWindow(null, "未命名 - 記事本");