句柄

c# 获取窗口句柄 标题 最大值

2010年03月01日 星期一 下午 04:08

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Reflection;

namespace WindowsApplication1
{
public partial class Form1 : Form
{

//获取窗口标题
[DllImport("user32", SetLastError = true)]
public static extern int GetWindowText(
IntPtr hWnd,//窗口句柄
StringBuilder lpString,//标题
int nMaxCount //最大值
);

//获取类的名字
[DllImport("user32.dll")]
private static extern int GetClassName(
IntPtr hWnd,//句柄
StringBuilder lpString, //类名
int nMaxCount //最大值
);

//根据坐标获取窗口句柄
[DllImport("user32")]
private static extern IntPtr WindowFromPoint(
Point Point  //坐标
);

public Form1()
{
InitializeComponent();
}


private void button1_Click(object sender, EventArgs e)
{
timer1.Start();
}

private void timer1_Tick(object sender, EventArgs e)
{
int x = Cursor.Position.X;
int y = Cursor.Position.Y;
Point p = new Point(x, y);
IntPtr formHandle = WindowFromPoint(p);//得到窗口句柄
StringBuilder title = new StringBuilder(256);
GetWindowText(formHandle, title, title.Capacity);//得到窗口的标题
StringBuilder className = new StringBuilder(256);
GetClassName(formHandle, className, className.Capacity);//得到窗口的句柄
this.textBox1.Text = title.ToString();
this.textBox2.Text = formHandle.ToString();
this.textBox3.Text = className.ToString();
}

}
}