我想编制一个qq自动登陆程序，确发现C#中对很多api没有封装，只有使用平台调用了。其中用到窗体查找和虚拟键盘、虚拟鼠标等函数。具体代码如下：using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using System.Runtime.InteropServices;namespace SimulateMouse{ public partial class DemoForm : Form { [StructLayout(LayoutKind.Sequential)] struct NativeRECT { public int left; public int top; public int right; public int bottom; } [Flags] enum MouseEventFlag : uint { Move = 0x0001, LeftDown = 0x0002, LeftUp = 0x0004, RightDown = 0x0008, RightUp = 0x0010, MiddleDown = 0x0020, MiddleUp = 0x0040, XDown = 0x0080, XUp = 0x0100, Wheel = 0x0800, VirtualDesk = 0x4000, Absolute = 0x8000 } [DllImport("user32.dll")] static extern bool SetCursorPos(int X, int Y); [DllImport("user32.dll")] static extern void mouse_event(MouseEventFlag flags, int dx, int dy, uint data, UIntPtr extraInfo); [DllImport("user32.dll")] static extern IntPtr FindWindow(string strClass, string strWindow); [DllImport("user32.dll")] static extern IntPtr FindWindowEx(HandleRef hwndParent, HandleRef hwndChildAfter, string strClass, string strWindow); [DllImport("user32.dll")] static extern bool GetWindowRect(HandleRef hwnd, out NativeRECT rect); [DllImport("user32.dll")] static extern void keybd_event(byte bVk,byte bScan,uint dwFlags,uint dwExtraInfo); private Point endPosition; public DemoForm() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { NativeRECT rect; IntPtr ptrTaskbar = FindWindow("#32770","QQ用户登录"); if (ptrTaskbar == IntPtr.Zero) { MessageBox.Show("No taskbar found."); return; } IntPtr ptrStartBtn = FindWindowEx(new HandleRef(this, ptrTaskbar), new HandleRef(this, IntPtr.Zero), "ComboBox", null); if (ptrStartBtn == IntPtr.Zero) { MessageBox.Show("No qq号码框 found."); return; } GetWindowRect(new HandleRef(this, ptrStartBtn), out rect); endPosition.X = (rect.left + rect.right) / 2; endPosition.Y = (rect.top + rect.bottom) / 2; SetCursorPos(endPosition.X, endPosition.Y); mouse_event(MouseEventFlag.LeftDown, 0, 0, 0, UIntPtr.Zero); mouse_event(MouseEventFlag.LeftUp, 0, 0, 0, UIntPtr.Zero); mouse_event(MouseEventFlag.LeftDown, 0, 0, 0, UIntPtr.Zero); mouse_event(MouseEventFlag.LeftUp, 0, 0, 0, UIntPtr.Zero); System.IO.StreamWriter tw = new System.IO.StreamWriter(@"d:/aa.txt"); tw.Write("49593533"); tw.Close(); System.IO.StreamReader tr = new System.IO.StreamReader(@"d:/aa.txt"); String mystr = tr.ReadToEnd(); tr.Close(); for(int i=0;i<mystr.Length;i++) keybd_event((byte)mystr[i], 0, 0, 0); IntPtr ptrPassWord = FindWindowEx(new HandleRef(this, ptrTaskbar), new HandleRef(this, IntPtr.Zero), "#32770", null); GetWindowRect(new HandleRef(this, ptrPassWord), out rect); endPosition.X = (rect.left + rect.right) / 2; endPosition.Y = (rect.top + rect.bottom) / 2; SetCursorPos(endPosition.X, endPosition.Y); mouse_event(MouseEventFlag.LeftDown, 0, 0, 0, UIntPtr.Zero); mouse_event(MouseEventFlag.LeftUp, 0, 0, 0, UIntPtr.Zero); mouse_event(MouseEventFlag.LeftDown, 0, 0, 0, UIntPtr.Zero); mouse_event(MouseEventFlag.LeftUp, 0, 0, 0, UIntPtr.Zero); mystr = "mypassword"; for (int i = 0; i < mystr.Length; i++) { keybd_event((byte)mystr[i], 0, 0, 0); } } }}说明：（1）所有虚拟键盘码可以到http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/WinUI/WindowsUserInterface/UserInput/VirtualKeyCodes.asp去查找。（2）首先介绍一下Keybd_event函数。Keybd_event能触发一个按键事件，也就是说回产生一个WM_KEYDOWN或WM_KEYUP消息。当然也可以用产生这两个消息来模拟按键，但是没有直接用这个函数方便。Keybd_event共有四个参数，第一个为按键的虚拟键值，如回车键为vk_return, tab键为vk_tab。第二个参数为扫描码，一般不用设置，用0代替就行第三个参数为选项标志，如果为keydown则置0即可，如果为keyup则设成“KEYEVENTF_KEYUP”或者2，第四个参数一般也是置0即可。keybd_event(VK_CONTROL, (BYTE)0, 0 ,0);keybd_event('A',(BYTE)0, 0 ,0); //此处可以用 'A', (BYTE)65, 用'a'不起作用.keybd_event('A', (BYTE)0, KEYEVENTF_KEYUP,0);keybd_event(VK_CONTROL, (BYTE)0, KEYEVENTF_KEYUP,0);上面的代码表示 ctl+a