关于WINFORM的关闭X的不可用的设计代码

可以在InitializeComponent()后面去调用这个涵数

 

[DllImport("aa.dll", EntryPoint = "mytest")]
        public static extern int mytest();

        [DllImport("user32.dll")]
        internal static extern IntPtr GetSystemMenu(IntPtr hwnd, bool bRevert);

        [DllImport("user32.dll")]
        internal static extern int GetMenuItemCount(IntPtr hMenu);

        [DllImport("user32.dll")]
        internal static extern int RemoveMenu(IntPtr hMenu, int uPosition, int uFlags);

        ///  <summary> 
        ///  窗体的关闭按钮失效 
        ///  </summary> 
        protected void CloseButtonEnable()
        {
            //  默认窗口去除关闭按钮 
            const int MF_BYPOSITION = 0x00000400;

            IntPtr hWindow = this.Handle;
            IntPtr hMenu = GetSystemMenu(hWindow, false);
            int count = GetMenuItemCount(hMenu);
            RemoveMenu(hMenu, count - 1, MF_BYPOSITION);
            RemoveMenu(hMenu, count - 2, MF_BYPOSITION);
        }