通过以下的一些代码可以实现捕获相关的一些消息事件;

以及可以通过调用 SetCloseMenu();实现关闭一些按钮功能如屏蔽关闭按钮功能等;

需要添加命名空间:using System.Runtime.InteropServices;

private const int WM_SYSCOMMAND = 0x112;        private const int MF_REMOVE = 0x1000;        private const int SC_RESTORE = 0xF120;     //还原           private const int SC_MOVE = 0xF010;   //移动           private const int SC_SIZE = 0xF000;   //大小           private const int SC_MINIMIZE = 0xF020;   //最小化           private const int SC_MAXIMIZE = 0xF030;   //最大化           private const int SC_CLOSE = 0xF060;   //关闭             [DllImport("USER32.DLL")]        public static extern int GetSystemMenu(int hwnd, int bRevert);        [DllImport("USER32.DLL")]        public static extern int RemoveMenu(int hMenu, int nPosition, int wFlags);              private void SetCloseMenu()        {            int hMenu = GetSystemMenu(this.Handle.ToInt32(), 0);//移除关闭按钮            RemoveMenu(hMenu, SC_CLOSE, MF_REMOVE);           }             /// 
        ///         /// 
        ///         protected override void WndProc(ref Message m)        {            switch (m.Msg)            {                case WM_SYSCOMMAND:                    switch (m.WParam.ToInt32())                    {                        case SC_MINIMIZE:                            base.WndProc(ref m);                            //捕获最小化消息                            break;                        case SC_RESTORE:                            base.WndProc(ref m);                            //捕获还原消息                            break;                        case SC_MAXIMIZE:                            base.WndProc(ref m);                            //捕获最大化消息                            break;                        default:                            base.WndProc(ref m);                            break;                    }                    break;                default:                    base.WndProc(ref m);                    break;            }        }