原文：http://blog.csdn.net/pengxuan/article/details/6169991
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; namespace WindowsFormsApplication1 { public partial class Form1 : Form { [DllImport("user32.dll")] private static extern UInt32 SendInput(UInt32 nInputs, ref INPUT pInputs, int cbSize); [DllImport("user32.dll", EntryPoint = "GetMessageExtraInfo", SetLastError = true)] private static extern IntPtr GetMessageExtraInfo(); private enum InputType { INPUT_MOUSE = 0, INPUT_KEYBOARD = 1, INPUT_HARDWARE = 2, } [Flags()] private enum MOUSEEVENTF { MOVE = 0x0001, //mouse move LEFTDOWN = 0x0002, //left button down LEFTUP = 0x0004, //left button up RIGHTDOWN = 0x0008, //right button down RIGHTUP = 0x0010, //right button up MIDDLEDOWN = 0x0020, //middle button down MIDDLEUP = 0x0040, //middle button up XDOWN = 0x0080, //x button down XUP = 0x0100, //x button down WHEEL = 0x0800, //wheel button rolled VIRTUALDESK = 0x4000, //map to entire virtual desktop ABSOLUTE = 0x8000, //absolute move } [Flags()] private enum KEYEVENTF { EXTENDEDKEY = 0x0001, KEYUP = 0x0002, UNICODE = 0x0004, SCANCODE = 0x0008, } [StructLayout(LayoutKind.Explicit)] private struct INPUT { [FieldOffset(0)] public Int32 type;//0-MOUSEINPUT;1-KEYBDINPUT;2-HARDWAREINPUT [FieldOffset(4)] public KEYBDINPUT ki; [FieldOffset(4)] public MOUSEINPUT mi; [FieldOffset(4)] public HARDWAREINPUT hi; } [StructLayout(LayoutKind.Sequential)] private struct MOUSEINPUT { public Int32 dx; public Int32 dy; public Int32 mouseData; public Int32 dwFlags; public Int32 time; public IntPtr dwExtraInfo; } [StructLayout(LayoutKind.Sequential)] private struct KEYBDINPUT { public Int16 wVk; public Int16 wScan; public Int32 dwFlags; public Int32 time; public IntPtr dwExtraInfo; } [StructLayout(LayoutKind.Sequential)] private struct HARDWAREINPUT { public Int32 uMsg; public Int16 wParamL; public Int16 wParamH; } //鼠标点击 public static void Click() { INPUT input_down = new INPUT(); input_down.mi.dx = 0; input_down.mi.dy = 0; input_down.mi.mouseData = 0; input_down.mi.dwFlags = (int)MOUSEEVENTF.LEFTDOWN; SendInput(1, ref input_down, Marshal.SizeOf(input_down)); INPUT input_up = input_down; input_up.mi.dwFlags = (int)MOUSEEVENTF.LEFTUP; SendInput(1, ref input_up, Marshal.SizeOf(input_up)); } //发送unicode字符，可发送任意字符 public static void SendUnicode(string message) { for (int i = 0; i < message.Length; i++) { INPUT input_down = new INPUT(); input_down.type = (int)InputType.INPUT_KEYBOARD; input_down.ki.dwFlags = (int)KEYEVENTF.UNICODE; input_down.ki.wScan = (short)message[i]; input_down.ki.wVk = 0; SendInput(1, ref input_down, Marshal.SizeOf(input_down));//keydown INPUT input_up = new INPUT(); input_up.type = (int)InputType.INPUT_KEYBOARD; input_up.ki.wScan = (short)message[i]; input_up.ki.wVk = 0; input_up.ki.dwFlags = (int)(KEYEVENTF.KEYUP | KEYEVENTF.UNICODE); SendInput(1, ref input_up, Marshal.SizeOf(input_up));//keyup } } //发送非unicode字符，只能发送小写字母和数字 public static void SendNoUnicode(string message) { string str = "abcdefghijklmnopqrstuvwxyz"; for (int i = 0; i < message.Length; i++) { short sendChar = 0; if (str.IndexOf(message[i].ToString().ToLower()) > -1) sendChar = (short)GetKeysByChar(message[i]); else sendChar = (short)message[i]; INPUT input_down = new INPUT(); input_down.type = (int)InputType.INPUT_KEYBOARD; input_down.ki.dwFlags = 0; input_down.ki.wVk = sendChar; SendInput(1, ref input_down, Marshal.SizeOf(input_down));//keydown INPUT input_up = new INPUT(); input_up.type = (int)InputType.INPUT_KEYBOARD; input_up.ki.wVk = sendChar; input_up.ki.dwFlags = (int)KEYEVENTF.KEYUP; SendInput(1, ref input_up, Marshal.SizeOf(input_up));//keyup } } public static void SendKeyBoradKey(short key) { INPUT input_down = new INPUT(); input_down.type = (int)InputType.INPUT_KEYBOARD; input_down.ki.dwFlags = 0; input_down.ki.wVk = key; SendInput(1, ref input_down, Marshal.SizeOf(input_down));//keydown INPUT input_up = new INPUT(); input_up.type = (int)InputType.INPUT_KEYBOARD; input_up.ki.wVk = key; input_up.ki.dwFlags = (int)KEYEVENTF.KEYUP; SendInput(1, ref input_up, Marshal.SizeOf(input_up));//keyup } private static Keys GetKeysByChar(char c) { string str = "abcdefghijklmnopqrstuvwxyz"; int index = str.IndexOf(c.ToString().ToLower()); switch (index) { case 0: return Keys.A; case 1: return Keys.B; case 2: return Keys.C; case 3: return Keys.D; case 4: return Keys.E; case 5: return Keys.F; case 6: return Keys.G; case 7: return Keys.H; case 8: return Keys.I; case 9: return Keys.J; case 10: return Keys.K; case 11: return Keys.L; case 12: return Keys.M; case 13: return Keys.N; case 14: return Keys.O; case 15: return Keys.P; case 16: return Keys.Q; case 17: return Keys.R; case 18: return Keys.S; case 19: return Keys.T; case 20: return Keys.U; case 21: return Keys.V; case 22: return Keys.W; case 23: return Keys.X; case 24: return Keys.Y; default: return Keys.Z; } } public Form1() { InitializeComponent(); } private void timer1_Tick(object sender, EventArgs e) { SendUnicode("我是蓝天，我Love中国。"); SendKeyBoradKey((short)Keys.Enter); } } }
