Junstyle's Blog

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 BrowserMouseClick
{
  public partial class Form1 : Form
  {
	  [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = false)]
	  static extern IntPtr SendMessage(IntPtr hWnd, uint Msg, IntPtr wParam, IntPtr lParam);

	  [DllImport("user32.dll", SetLastError = true)]
	  static extern IntPtr GetWindow(IntPtr hWnd, uint uCmd);

	  [DllImport("user32.dll", CharSet = CharSet.Auto)]
	  static extern int GetClassName(IntPtr hWnd, StringBuilder lpClassName, int nMaxCount);

	  public Form1()
	  {
		  InitializeComponent();
	  }

	  private void Form1_Load(object sender, EventArgs e)
	  {
		  webBrowser1.Navigate("http://www.devpub.com");
	  }

	  private void btnMouseClick_Click(object sender, EventArgs e)
	  {
		  int x = 100; // X coordinate of the click
		  int y = 80; // Y coordinate of the click
		  IntPtr handle = webBrowser1.Handle;
		  StringBuilder className = new StringBuilder(100);
		  while (className.ToString() != "Internet Explorer_Server") // The class control for the browser
		  {
			  handle = GetWindow(handle, 5); // Get a handle to the child window
			  GetClassName(handle, className, className.Capacity);
		  }

		  IntPtr lParam = (IntPtr)((y << 16) | x); // The coordinates
		  IntPtr wParam = IntPtr.Zero; // Additional parameters for the click (e.g. Ctrl)
		  const uint downCode = 0x201; // Left click down code
		  const uint upCode = 0x202; // Left click up code
		  SendMessage(handle, downCode, wParam, lParam); // Mouse button down
		  SendMessage(handle, upCode, wParam, lParam); // Mouse button up
	  }
  }
}

想在WebBrowser控件里面模拟鼠标点击，在百度上找了半天，怎么也找不到，还是google强大，在一个国外网站上找到的，代码比较清楚了，不做说明。

窗体1中的代码：

	/////////////////////////////////////////
	///file name: Note.cs
	///
	public class Note
	{
		//声明 API 函数
		[DllImport( "User32.dll", EntryPoint = "SendMessage" )]
		private static extern int SendMessage(
			  int hWnd,     // handle to destination window
			  int Msg,     // message
			  int wParam,   // first message parameter
			  int lParam   // second message parameter
		);
		[DllImport( "User32.dll", EntryPoint = "FindWindow" )]
		private static extern int FindWindow( string lpClassName, string lpWindowName );
		//定义消息常数
		public const int USER = 0x500;
		public const int TEST = USER + 1;

		//向窗体发送消息的函数
		private void SendMsgToMainForm( int MSG )
		{
			int WINDOW_HANDLER = FindWindow( null, @"Note Pad" );
			if( WINDOW_HANDLER == 0 )
			{
				throw new Exception( "Could not find Main window!" );
			}
			SendMessage( WINDOW_HANDLER, MSG, 100, 200 );
		}
	}

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