C#模拟键盘事件

public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        [DllImport("USER32.DLL")]
        public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);  //导入寻找windows窗体的方法
        [DllImport("USER32.DLL")]
        public static extern bool SetForegroundWindow(IntPtr hWnd);  //导入为windows窗体设置焦点的方法
        [DllImport("USER32.DLL")]
        public static extern void keybd_event(byte bVk, byte bScan, int dwFlags, int dwExtraInfo);  //导入模拟键盘的方法

        private void button1_Click(object sender, EventArgs e)
        {
            IntPtr calculatorHandle = FindWindow(null, "aaa.txt - 记事本");
            //判断是否找到了该窗体
            if (calculatorHandle == IntPtr.Zero)
            {
                MessageBox.Show("Calculator is not running.");
                return;
            }
            Clipboard.SetText("第三方");

            SetForegroundWindow(calculatorHandle);
            keybd_event(0x11, , , );
            keybd_event(, , , );
            keybd_event(0x11, , , );
            keybd_event(, , , );
        }
    }

keybd_event方法的第一个参数值有：

keybd_event(0x11, 0, 0, 0)是CTRL 键 按下

keybd_event(0x11, 0, 2, 0)是CTRL 键 松开）

vbKeyLButton 0x1 鼠标左键  
vbKeyRButton 0x2 鼠标右键  
vbKeyCancel 0x3 CANCEL 键  
vbKeyMButton 0x4 鼠标中键  
vbKeyBack 0x8 BACKSPACE 键  
vbKeyTab 0x9 TAB 键  
vbKeyClear 0xC CLEAR 键  
vbKeyReturn 0xD ENTER 键  
vbKeyShift 0x10 SHIFT 键  
vbKeyControl 0x11 CTRL 键  
vbKeyMenu 0x12 MENU 键   
vbKeyPause 0x13 PAUSE 键  
vbKeyCapital 0x14 CAPS LOCK 键  
vbKeyEscape 0x1B ESC 键  
vbKeySpace 0x20 SPACEBAR 键  
vbKeyPageUp 0x21 PAGE UP 键  
vbKeyEnd 0x23 END 键  
vbKeyHome 0x24 HOME 键  
vbKeyLeft 0x25 LEFT ARROW 键  
vbKeyUp 0x26 UP ARROW 键  
vbKeyRight 0x27 RIGHT ARROW 键  
vbKeyDown 0x28 DOWN ARROW 键  
vbKeySelect 0x29 Select 键  
vbKeyPrint 0x2A PRINT SCREEN 键  
vbKeyExecute 0x2B EXECUTE 键  
vbKeySnapshot 0x2C SNAPSHOT 键  
vbKeyDelete 0x2E Delete 键  
vbKeyHelp 0x2F HELP 键  
vbKeyNumlock 0x90 NUM LOCK 键  
   
vbKeyA 65 A 键  
vbKeyB 66 B 键  
vbKeyC 67 C 键  
vbKeyD 68 D 键  
vbKeyE 69 E 键  
vbKeyF 70 F 键  
vbKeyG 71 G 键  
vbKeyH 72 H 键  
vbKeyI 73 I 键  
vbKeyJ 74 J 键  
vbKeyK 75 K 键  
vbKeyL 76 L 键  
vbKeyM 77 M 键  
vbKeyN 78 N 键  
vbKeyO 79 O 键  
vbKeyP 80 P 键  
vbKeyQ 81 Q 键  
vbKeyR 82 R 键  
vbKeyS 83 S 键  
vbKeyT 84 T 键  
vbKeyU 85 U 键  
vbKeyV 86 V 键  
vbKeyW 87 W 键  
vbKeyX 88 X 键  
vbKeyY 89 Y 键  
vbKeyZ 90 Z 键  
   
vbKey0 48 0 键  
vbKey1 49 1 键  
vbKey2 50 2 键  
vbKey3 51 3 键  
vbKey4 52 4 键  
vbKey5 53 5 键  
vbKey6 54 6 键  
vbKey7 55 7 键  
vbKey8 56 8 键  
vbKey9 57 9 键  
   
vbKeyNumpad0 0x60 0 键  
vbKeyNumpad1 0x61 1 键  
vbKeyNumpad2 0x62 2 键  
vbKeyNumpad3 0x63 3 键  
vbKeyNumpad4 0x64 4 键  
vbKeyNumpad5 0x65 5 键  
vbKeyNumpad6 0x66 6 键  
vbKeyNumpad7 0x67 7 键  
vbKeyNumpad8 0x68 8 键  
vbKeyNumpad9 0x69 9 键  
vbKeyMultiply 0x6A MULTIPLICATIONSIGN(*)键  
vbKeyAdd 0x6B PLUS SIGN (+) 键  
vbKeySeparator 0x6C ENTER 键   
vbKeySubtract 0x6D MINUS SIGN (-) 键  
vbKeyDecimal 0x6E DECIMAL POINT (.) 键  
vbKeyDivide 0x6F DIVISION SIGN (/) 键  
   
vbKeyF1 0x70 F1 键  
vbKeyF2 0x71 F2 键  
vbKeyF3 0x72 F3 键  
vbKeyF4 0x73 F4 键  
vbKeyF5 0x74 F5 键  
vbKeyF6 0x75 F6 键  
vbKeyF7 0x76 F7 键  
vbKeyF8 0x77 F8 键  
vbKeyF9 0x78 F9 键  
vbKeyF10 0x79 F10 键  
vbKeyF11 0x7A F11 键  
vbKeyF12 0x7B F12 键