WInForm右上角关闭按钮消息捕获与事件修改

		/// <summary>
        /// winform右上关闭按钮事件修改
        /// </summary>
        /// <param name="msg">message</param>
        protected override void WndProc(ref Message msg)
        {
            const int WM_SYSCOMMAND = 0x0112;
            const int SC_CLOSE = 0xF060;

            try
            {
                if (msg.Msg == WM_SYSCOMMAND && ((int)msg.WParam == SC_CLOSE))
                {
                    // 点击winform右上关闭按钮 

                    // 加入想要的逻辑处理

                    return;
                }
                
 				base.WndProc(ref msg);
            }
            catch (Exception ex)
            {
                //消息事件修改失败

                Console.WriteLine(ex.Message);

                //处理原来的消息
                base.WndProc(ref msg);
            }
        }在这里插入代码片