C#實現的三種方式實現模擬鍵盤按鍵

模擬按鍵在.Net中有三種方式實現。

第一種方式：System.Windows.Forms.SendKeys 

                     組合鍵：Ctrl = ^ 、Shift = + 、Alt = %

模擬按鍵：A 

        private void button1_Click(object sender, EventArgs e)
        {
            textBox1.Focus();
            SendKeys.Send("{A}");
        }

　　

模擬組合鍵：CTRL + A 

        private void button1_Click(object sender, EventArgs e)
        {
            webBrowser1.Focus();
            SendKeys.Send("^{A}");
        }

SendKeys.Send // 異步模擬按鍵(不阻塞UI) 

SendKeys.SendWait // 同步模擬按鍵(會阻塞UI直到對方處理完消息后返回)

 

第二種方式：keybd_event

模擬按鍵：A

        [DllImport("user32.dll", EntryPoint = "keybd_event", SetLastError = true)]
        public static extern void keybd_event(Keys bVk, byte bScan, uint dwFlags, uint dwExtraInfo);

        private void button1_Click(object sender, EventArgs e)
        {
            textBox1.Focus();
            keybd_event(Keys.A, 0, 0, 0);
        }

　　

模擬組合鍵：CTRL + A

        public const int KEYEVENTF_KEYUP = 2;

        private void button1_Click(object sender, EventArgs e)
        {
            webBrowser1.Focus();
            keybd_event(Keys.ControlKey, 0, 0, 0);
            keybd_event(Keys.A, 0, 0, 0);
            keybd_event(Keys.ControlKey, 0, KEYEVENTF_KEYUP, 0);
        }

　

　模擬組合鍵：CTRL + X ，CTRL + C ，CTRL + V ，CTRL + Z

  [DllImport("user32.dll", EntryPoint = "keybd_event", SetLastError = true)]
        public static extern void keybd_event(Keys bVk, byte bScan, uint dwFlags, uint dwExtraInfo);
        public const int KEYEVENTF_KEYUP = 2;

        private void InitSheet(FarPoint.Win.Spread.SheetView sheet)
        {
            // 列の設定
            sheet.ColumnCount = 3;
            // 行の設定
            sheet.RowCount = 9;
        }

        private void BtnCtrlX_Click(object sender, EventArgs e)
        {
            textBox1.Focus();
            keybd_event(Keys.ControlKey, 0, 0, 0);
            keybd_event(Keys.X, 0, 0, 0);
            keybd_event(Keys.ControlKey, 0, KEYEVENTF_KEYUP, 0);
            SendKeys.Send("^{X}");
        }

        private void BtnCtrlC_Click(object sender, EventArgs e)
        {
            textBox1.Focus();
            keybd_event(Keys.ControlKey, 0, 0, 0);
            keybd_event(Keys.C, 0, 0, 0);
            keybd_event(Keys.ControlKey, 0, KEYEVENTF_KEYUP, 0);
            SendKeys.Send("^{C}");
        }

        private void BtnCtrlV_Click(object sender, EventArgs e)
        {
            spreadEx1.Focus();
            keybd_event(Keys.ControlKey, 0, 0, 0);
            keybd_event(Keys.V, 0, 0, 0);
            keybd_event(Keys.ControlKey, 0, KEYEVENTF_KEYUP, 0);
            SendKeys.Send("^{V}");
        }

        private void BtnCtrlZ_Click(object sender, EventArgs e)
        {
            textBox1.Focus();
            keybd_event(Keys.ControlKey, 0, 0, 0);
            keybd_event(Keys.Z, 0, 0, 0);
            keybd_event(Keys.ControlKey, 0, KEYEVENTF_KEYUP, 0);
            SendKeys.Send("^{Z}");
        }

　　

上面兩種方式都是全局范圍呢，現在介紹如何對單個窗口進行模擬按鍵

 

模擬按鍵：A / 兩次 

        [DllImport("user32.dll", EntryPoint = "PostMessageA", SetLastError = true)]
        public static extern int PostMessage(IntPtr hWnd, int Msg, Keys wParam, int lParam);

        public const int WM_CHAR = 256;

        private void button1_Click(object sender, EventArgs e)
        {
            textBox1.Focus();
            PostMessage(textBox1.Handle, 256, Keys.A, 2);
        }

　　

 

模擬組合鍵：CTRL + A

       如下方式可能會失效，所以最好采用上述兩種方式 

        public const int WM_KEYDOWN = 256;
        public const int WM_KEYUP = 257;

        private void button1_Click(object sender, EventArgs e)
        {
            webBrowser1.Focus();
            keybd_event(Keys.ControlKey, 0, 0, 0);
            keybd_event(Keys.A, 0, 0, 0); 
            PostMessage(webBrowser1.Handle, WM_KEYDOWN, Keys.A, 0);
            keybd_event(Keys.ControlKey, 0, KEYEVENTF_KEYUP, 0);

//直接給你貼一個我自己寫的類，模擬鍵盤輸入字符
using System.Runtime.InteropServices;
 
namespace lisonFunc
{
    static class MyKey
    {
        [DllImport("user32.dll", EntryPoint = "keybd_event")]  
        private static extern void keybd_event(byte bVk, byte bScan, int dwFlags, int dwExtraInfo);
 
        /// <summary>
        /// 按一個鍵后等待一段時間
        /// </summary>
        /// <param name="keyCode">要按的鍵，如Keys.Enter</param>
        /// <param name="wait">等待的時間（毫秒）</param>
        public static void KeyPress(Keys keyCode, int wait)
        {
            keybd_event((byte)keyCode, 0, 0, 0);
            keybd_event((byte)keyCode, 0, 2, 0);
            Thread.Sleep(wait);
        }
        /// <summary>
        /// Ctrl+...組合鍵
        /// </summary>
        /// <param name="keyCode">要同時按下的鍵，如Keys.C</param>
        public static void ControlKey(Keys keyCode)
        {
            keybd_event((byte)Keys.ControlKey, 0, 0, 0);
            keybd_event((byte)keyCode, 0, 0, 0);
            keybd_event((byte)keyCode, 0, 2, 0);
            keybd_event((byte)Keys.ControlKey, 0, 2, 0);
        }
        /// <summary>
        /// 重復n次按某個鍵
        /// </summary>
        /// <param name="keyCode">要按的鍵，如Keys.Enter</param>
        /// <param name="Times">按鍵次數</param>
        /// <param name="wait">間隔時間（毫秒）</param>
        public static void KeyPressRep(Keys keyCode, int Times, int wait)
        {
            for (int i = 0; i < Times; i++)
            {
                KeyPress(keyCode,wait);
            }
        }
        /// <summary>
        /// 輸入一串數字
        /// </summary>
        /// <param name="NumWords"></param>
        public static void TypeNums(string NumWords)
        {
            foreach (char c in NumWords.ToCharArray())
            {
                KeyPress(48 + c, 50);
            }
        }
    }
}