【WebBrowser】c# 在WebBrowser中用SendMessage模拟鼠标点击-SendMessage-模拟鼠标点击

欢迎您访问我爱IT技术网，今天小编为你分享的编程技术是：【c# 在WebBrowser中用SendMessage模拟鼠标点击】，下面是详细的讲解！

c# 在WebBrowser中用SendMessage模拟鼠标点击

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
     }
}
}

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