C#重写窗体的方法

 1 using System;
 2 using System.Collections.Generic;
 3 using System.ComponentModel;
 4 using System.Data;
 5 using System.Drawing;
 6 using System.Linq;
 7 using System.Text;
 8 using System.Threading.Tasks;
 9 using System.Windows.Forms;
10 using System.Runtime.InteropServices;
11 
12 namespace Mform
13 {
14     public partial class Form1 : Form
15     {
16         [DllImport("user32.dll")]
17         public static extern bool ReleaseCapture();
18         [DllImport("user32.dll")]
19         public static extern bool SendMessage(IntPtr hwnd, int wMsg, int wParam, int lParam);
20         public Form1()
21         {
22             InitializeComponent();
23         }
24 
25         protected override void OnLoad(EventArgs e)
26         {
27             this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;//设置窗体默认属性
28             base.OnLoad(e);
29         }
30         protected override void OnMouseDown(MouseEventArgs e)
31         {
32             ReleaseCapture();
33             SendMessage(this.Handle, 0x0112, 0xF010 + 0x0002, 0);//调用Api
34             base.OnMouseDown(e);
35         }
36     }
37 }
此方法重写窗体的