C# 拖动无标题栏窗体

using System;using System.Drawing;using System.Collections;using System.ComponentModel;using System.Windows.Forms;using System.Data;using System.Runtime.InteropServices; namespace Window{/// <summary>/// Form1 的摘要说明。/// </summary>public class Form1 : System.Windows.Forms.Form{private System.Windows.Forms.Button button1;private System.Windows.Forms.Button button2;/// <summary>/// 必需的设计器变量。/// </summary>private System.ComponentModel.Container components = null;public Form1(){//// Windows 窗体设计器支持所必需的//InitializeComponent();//// TODO: 在 InitializeComponent 调用后添加任何构造函数代码//}/// <summary>/// 清理所有正在使用的资源。/// </summary>protected override void Dispose( bool disposing ){if( disposing ){if (components != null) {components.Dispose();}}base.Dispose( disposing );}#region Windows 窗体设计器生成的代码/// <summary>/// 设计器支持所需的方法 - 不要使用代码编辑器修改/// 此方法的内容。/// </summary>private void InitializeComponent(){System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1));this.button1 = new System.Windows.Forms.Button();this.button2 = new System.Windows.Forms.Button();this.SuspendLayout();// // button1// this.button1.Location = new System.Drawing.Point(104, 72);this.button1.Name = "button1";this.button1.Size = new System.Drawing.Size(104, 23);this.button1.TabIndex = 0;this.button1.Text = "显示标题栏";this.button1.Click = new System.EventHandler(this.button1_Click);// // button2// this.button2.Location = new System.Drawing.Point(104, 104);this.button2.Name = "button2";this.button2.Size = new System.Drawing.Size(104, 23);this.button2.TabIndex = 1;this.button2.Text = "关闭应用程序";this.button2.Click = new System.EventHandler(this.button2_Click);// // Form1// this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);this.BackgroundImage = ((System.Drawing.Image)(resources.GetObject("$this.BackgroundImage")));this.ClientSize = new System.Drawing.Size(320, 198);this.Controls.Add(this.button2);this.Controls.Add(this.button1);this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;this.Name = "Form1";this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;this.Text = "演示拖动无标题栏窗体";this.MouseDown = new System.Windows.Forms.MouseEventHandler(this.Form1_MouseDown);this.ResumeLayout(false);}#endregion/// <summary>/// 应用程序的主入口点。/// </summary>[STAThread]static void Main() {Application.Run(new Form1());}[DllImport("user32.dll")]public static extern bool ReleaseCapture();[DllImport("user32.dll")]public static extern bool SendMessage(IntPtr hwnd,int wMsg,int wParam,int lParam); public const int WM_SYSCOMMAND=0x0112;public const int SC_MOVE=0xF010;public const int HTCAPTION=0x0002;private void button2_Click(object sender, System.EventArgs e){//关闭应用程序this.Close();}private void button1_Click(object sender, System.EventArgs e){//显示标题栏if(this.button1.Text=="显示标题栏"){this.FormBorderStyle=FormBorderStyle.Fixed3D;this.button1.Text="关闭标题栏";}else{this.FormBorderStyle=FormBorderStyle.None;this.button1.Text="显示标题栏";}}private void Form1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e){//拖动窗体ReleaseCapture();SendMessage(this.Handle,WM_SYSCOMMAND,SC_MOVE HTCAPTION, 0); }}}