c#中两种方法拖动没有边框的窗体

 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 MoveNoneBoderForm{ public partial class Form3 : Form { public Form3() { InitializeComponent(); } #region 无边框窗体之拖动方法1 protected override void WndProc(ref Message m) { base.WndProc(ref m); if (m.Msg == 0x84) { switch (m.Result.ToInt32()) { case 1: m.Result = new IntPtr(2); break; } } } #endregion #region 方法2 //[DllImport("user32.dll", EntryPoint = "SendMessage")] //public static extern int SendMessage(int hWnd, int wMsg, int wParam, int lParam); //[DllImport("user32.dll", EntryPoint = "ReleaseCapture")] //public static extern int ReleaseCapture(); //public const int WM_SysCommand = 0x0112; //public const int SC_MOVE = 0xF012; //private void Form1_MouseDown(object sender, MouseEventArgs e) //{ // ReleaseCapture(); // SendMessage(this.Handle.ToInt32(), WM_SysCommand, SC_MOVE, 0); //} #endregion private void button1_Click(object sender, EventArgs e) { this.Close(); } }}