C#winform禁用双击图标关闭窗体的事件

        [DllImport("user32.dll")]         private static extern IntPtr GetSystemMenu(IntPtr hWnd, bool bRevert);         protected override void WndProc(ref Message m)         {             if (m.Msg == 0x112)             {                 if (m.WParam.ToInt32() == 61539 || m.WParam.ToInt32() == 61587)                 {                     return;                 }             }             base.WndProc(ref m);         }