C# 模拟鼠标点击别的程序按钮

在网上看到有人问C#中模拟鼠标点击按钮的帖子，在VB中用API实现的代码网上不少，可用C#写的基本就没有了，在这里简单写个事例。

 

1、首先建一个Demo项目。只有一个表单，标题是"Demo"。里面放一个按钮Button1，Text设置为"Click Me"。编译成exe。做事例用，这个代码就不用贴出来了吧  呵呵。

 

2、新建项目，添加表单，拖个按钮。代码如下：

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;using System.Diagnostics;namespace ClickButton_SendMessage{ public delegate bool CallBack(IntPtr hwnd, int lParam); public partial class frmMain : Form { [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)] static extern IntPtr FindWindow(string strClass, string strWindow); [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)] static extern IntPtr EnumChildWindows(IntPtr hWndParent, CallBack lpEnumFunc, int lParam); [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)] static extern int GetWindowRect(IntPtr hwnd,RECT lpRect); [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)] static extern int SetCursorPos(int x,int y); [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)] static extern int SetForegroundWindow(IntPtr hwnd); [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)] static extern void mouse_event(int dwFlags,int dx,int dy,int cButtons, int dwExtraInfo); public const int MOUSEEVENTF_LEFTDOWN = 0x2; public const int MOUSEEVENTF_LEFTUP = 0x4; [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)] static extern int GetWindowText(IntPtr hwnd, string lpString, int cch); [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)] static extern int GetWindowTextLength(IntPtr hwnd); public struct RECT { public int Left; public int Top; public int Right; public int Bottom; } public struct POINT { public int x; public int y; } public static int nCount; public frmMain() { InitializeComponent(); } public static bool EnumWindowsProc(IntPtr h, int lParam) { string strText=new string((char)0,255); RECT hRect=new RECT(); nCount = nCount + 1; int Ret=0; Ret = GetWindowTextLength(h); string sSave = new string((char)9, Ret); GetWindowText(h, sSave, Ret + 1); if(sSave.IndexOf("Click Me",0) > -1) { //GetWindowRect(h, hRect); //SetCursorPos((hRect.Left + hRect.Right) / 2, (hRect.Top + hRect.Bottom) / 2); SetCursorPos(200, 160);//这是用Spy++直接获取的，VS都带这个工具 SetForegroundWindow(h); mouse_event(MOUSEEVENTF_LEFTDOWN | MOUSEEVENTF_LEFTUP, 0, 0, 0, 0); return false; } return true; } private void button1_Click(object sender, EventArgs e) { IntPtr h; string strName = "Demo"; h = FindWindow(null, strName); Debug.Print(h.ToString()); if (h.ToInt32() != 0) { CallBack myCallBack = new CallBack(frmMain.EnumWindowsProc); EnumChildWindows(h, myCallBack, 0); } } }}

3、如果想不停的点击   加个Timer不停点击。  或者加个变量IsLogin = FindWindow(null,"登陆成功后的标题  或  登录失败提示标题")
另外，只有登录按钮所在的窗体在激活时才能点中。 可以用ShowWindow()先激活窗体，然后再进行点击操作。