winform最小化及关闭提示

   public PrintService()
        {
            InitializeComponent();
            this.WindowState = FormWindowState.Minimized;
        }
    
    private void PrintService_Load(object sender, EventArgs e)
        {
            //初始化是不可见的  
            //notifyIcon.Visible = false;
        }

        protected override void OnClosing(CancelEventArgs e)
        {
            if (MessageBox.Show("是否确认关闭打印服务？", "退出确认", MessageBoxButtons.OKCancel) != DialogResult.OK)
            {
                e.Cancel = true;
            }
            base.OnClosing(e);
        }

消息提示优化
* 参考：http://www.cnblogs.com/ManchesterUnitedFootballClub/p/4596465.html  Winfrom 提示消息框公共类
* http://www.cnblogs.com/wuhuacong/archive/2011/11/22/2259128.html   Winform开发框架之对话框样式同化

http://www.aichengxu.com/other/1850478.htm               DevExpress MessageBox 弹出框 底层类

前台调用：
//图一的前台调用
MessageBox.Show("测试", "标题", MessageBoxButtons.OK);
//图二的前台调用
Functionjsj.ShowMsg("测试", Functionjsj.MsgType.OK);
说明： Functionjsj 为自定义类：下有三种类型的输出：
Functionjsj.ShowMsg(消息, 枚举类型);Functionjsj.ShowMsg(消息, 标题, 枚举类型);Functionjsj.ShowMsgBox(消息, 标题, 枚举类型);
底层类：
#region DevExpress MessageBox 弹出框

        #region 枚举弹出类型
        public enum MsgType {
            /// <summary>
            /// 提示
            /// </summary>
            OK = 0,
            /// <summary>
            /// 警告
            /// </summary>
            Warning = 1,
            /// <summary>
            /// 询问
            /// </summary>
            Question = 2,
            /// <summary>
            /// 错误
            /// </summary>
            Exception = 3,
            /// <summary>
            /// 是/否/取消
            /// </summary>
            YesNoCancel = 4,
            /// <summary>
            /// 是/否
            /// </summary>
            YesNo = 5        
        }
        #endregion

        /// <summary>
        /// 显示消息
        /// </summary>
        /// <param name="msg">消息</param>
        /// <param name="ie">消息类型</param>
        /// <returns>需要用户作出选择时，返回YES or NO,否则返回，ok，cancel等</returns>
        public static System.Windows.Forms.DialogResult ShowMsg(string msg, MsgType msgType)
        {
            switch (msgType)
            {
                case MsgType.OK:
                    return ShowMsg(msg, "信息", MsgType.OK);
                case MsgType.Question:
                    return ShowMsg(msg, "确认", MsgType.Question);
                case MsgType.Warning:
                    return ShowMsg(msg, "警告", MsgType.Warning);
                case MsgType.Exception:
                    Exception(msg);
                    return System.Windows.Forms.DialogResult.OK;
                case MsgType.YesNoCancel:
                    return ShowMsg(msg, "请选择", MsgType.YesNoCancel);
                case MsgType.YesNo:
                    return ShowMsg(msg, "请选择", MsgType.YesNo);
                default:
                    return System.Windows.Forms.DialogResult.Cancel;
            }
        }

        /// <summary>
        /// 显示消息
        /// </summary>
        /// <param name="msg">消息</param>
        /// <param name="caption">标题 系统会自动加上一些信息</param>
        /// <param name="msgType">消息类型</param>
        /// <returns>需要用户作出选择时，返回YES or NO,否则返回，ok，cancel等</returns>
        public static System.Windows.Forms.DialogResult ShowMsg(string msg, string caption, MsgType msgType)
        {
            switch (msgType)
            {
                case MsgType.OK:
                    return ShowMsgBox(msg, caption, msgType);
                case MsgType.Question:
                    return ShowMsgBox(msg, caption, msgType);
                case MsgType.Warning:
                    return ShowMsgBox(msg, caption, msgType);
                case MsgType.Exception:
                    Exception(msg);
                    return System.Windows.Forms.DialogResult.OK;
                case MsgType.YesNoCancel:
                    return ShowMsgBox(msg, caption, msgType);
                case MsgType.YesNo:
                    return ShowMsgBox(msg, caption, msgType);
                default:
                    return System.Windows.Forms.DialogResult.Cancel;
            }
        }

        /// <summary>
        /// 显示消息
        /// </summary>
        /// <param name="msg">消息</param>
        /// <param name="catpion">标题</param>
        /// <param name="msgType">消息类型</param>
        /// <returns>需要用户作出选择时，返回YES or NO,否则返回，ok，cancel等</returns>
        public static System.Windows.Forms.DialogResult ShowMsgBox(string msg, string catpion, MsgType msgType)
        {
            switch (msgType)
            {
                case MsgType.OK:
                    return  Show(msg, catpion, System.Windows.Forms.MessageBoxButtons.OK);
                case MsgType.Question:
                    return  Question(msg, catpion, System.Windows.Forms.MessageBoxButtons.OKCancel, MessageBoxDefaultButton.Button2);
                case MsgType.Warning:
                    return  Warning(msg, catpion, System.Windows.Forms.MessageBoxButtons.OK);
                case MsgType.Exception:
                     Exception(msg);
                    return System.Windows.Forms.DialogResult.OK;
                case MsgType.YesNoCancel:
                    return  Information(msg, catpion, System.Windows.Forms.MessageBoxButtons.YesNoCancel, MessageBoxDefaultButton.Button3);
                case MsgType.YesNo:
                    return  Information(msg, catpion, System.Windows.Forms.MessageBoxButtons.YesNo, MessageBoxDefaultButton.Button2);
                default:
                    return System.Windows.Forms.DialogResult.Cancel;
            }
        }

        /// <summary>
        /// 显示消息
        /// </summary>
        /// <param name="msg">消息</param>
        /// <param name="ie">消息类型</param>
        /// <returns>需要用户作出选择时，返回YES or NO,否则返回，ok，cancel等</returns>
        public static System.Windows.Forms.DialogResult ShowMsg(IWin32Window owner, string msg, MsgType msgType)
        {
            switch (msgType)
            {
                case MsgType.OK:
                    return Show(msg, "信息", System.Windows.Forms.MessageBoxButtons.OK);
                case MsgType.Question:
                    return Question(msg, "确认", System.Windows.Forms.MessageBoxButtons.OKCancel, MessageBoxDefaultButton.Button2);
                case MsgType.Warning:
                    return Warning(msg, "警告", System.Windows.Forms.MessageBoxButtons.OK);
                case MsgType.Exception:
                        Exception(msg);
                    return System.Windows.Forms.DialogResult.OK;
                case MsgType.YesNoCancel:
                    return  Information(msg, "请选择", System.Windows.Forms.MessageBoxButtons.YesNoCancel, MessageBoxDefaultButton.Button3);
                default:
                    return System.Windows.Forms.DialogResult.Cancel;
            }
        }

        #region Show
        public static DialogResult Show(string text)
        {
            return DevExpress.XtraEditors.XtraMessageBox.Show(text);
        }

        public static DialogResult Show(string text, string caption)
        {

            return DevExpress.XtraEditors.XtraMessageBox.Show(text, caption);
        }

        public static DialogResult Show(string text, string caption, MessageBoxButtons buttons)
        {
            return DevExpress.XtraEditors.XtraMessageBox.Show(text, caption, buttons, MessageBoxIcon.Information);
        }

        public static DialogResult Show(IWin32Window owner, string text, string caption, MessageBoxButtons buttons)
        {
            return DevExpress.XtraEditors.XtraMessageBox.Show(owner, text, caption, buttons, MessageBoxIcon.Information);
        }

        public static DialogResult Show(string text, string caption, System.Windows.Forms.MessageBoxButtons buttons, MessageBoxIcon icon)
        {

            return DevExpress.XtraEditors.XtraMessageBox.Show(text, caption, buttons, icon);
        }

        public static DialogResult Show(IWin32Window owner, string text, string caption, System.Windows.Forms.MessageBoxButtons buttons, MessageBoxIcon icon)
        {
            return DevExpress.XtraEditors.XtraMessageBox.Show(owner, text, caption, buttons, icon);
        }
        #endregion

        #region Information

        public static DialogResult Information(string message)
        {
            return DevExpress.XtraEditors.XtraMessageBox.Show(message, " 消息", MessageBoxButtons.OK, MessageBoxIcon.Information);
        }

        public static DialogResult Information(string message, string caption)
        {
            return DevExpress.XtraEditors.XtraMessageBox.Show(message, caption, MessageBoxButtons.OK, MessageBoxIcon.Information);
        }

        public static DialogResult Information(string message, string caption, MessageBoxButtons buttons)
        {
            return DevExpress.XtraEditors.XtraMessageBox.Show(message, caption, buttons, MessageBoxIcon.Information);
        }
        public static DialogResult Information(string message, string caption, MessageBoxButtons buttons, MessageBoxDefaultButton defButton)
        {
            return DevExpress.XtraEditors.XtraMessageBox.Show(message, caption, buttons, MessageBoxIcon.Information, defButton);
        }
        #endregion

        #region Question

        public static DialogResult Question(string text)
        {
            return DevExpress.XtraEditors.XtraMessageBox.Show(text, "疑问", MessageBoxButtons.OK, MessageBoxIcon.Question);
        }
        public static DialogResult Question(string text, string caption)
        {
            return DevExpress.XtraEditors.XtraMessageBox.Show(text, caption, MessageBoxButtons.OK, MessageBoxIcon.Question);
        }
        public static DialogResult Question(string text, string caption, MessageBoxButtons buttons)
        {
            return DevExpress.XtraEditors.XtraMessageBox.Show(text, caption, buttons, MessageBoxIcon.Question);
        }

        public static DialogResult Question(string text, string caption, MessageBoxButtons buttons, MessageBoxDefaultButton defButton)
        {
            return DevExpress.XtraEditors.XtraMessageBox.Show(text, caption, buttons, MessageBoxIcon.Question, defButton);
        }

        #endregion

        #region Warning
        public static DialogResult Warning(string text)
        {
            return DevExpress.XtraEditors.XtraMessageBox.Show(text, "警告", MessageBoxButtons.OK, MessageBoxIcon.Warning);
        }
        public static DialogResult Warning(string text, string caption)
        {
            return DevExpress.XtraEditors.XtraMessageBox.Show(text, caption, MessageBoxButtons.OK, MessageBoxIcon.Warning);
        }
        public static DialogResult Warning(string text, string caption, MessageBoxButtons buttons)
        {
            return DevExpress.XtraEditors.XtraMessageBox.Show(text, caption, buttons, MessageBoxIcon.Warning);
        }
        #endregion

        #region Exception
        public static DialogResult Exception(string text)
        {
            return DevExpress.XtraEditors.XtraMessageBox.Show(text, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
        }
        public static DialogResult Exception(string text, string caption)
        {
            return DevExpress.XtraEditors.XtraMessageBox.Show(text, caption, MessageBoxButtons.OK, MessageBoxIcon.Error);
        }
        public static DialogResult Exception(string text, string caption, MessageBoxButtons buttons)
        {
            return DevExpress.XtraEditors.XtraMessageBox.Show(text, caption, buttons, MessageBoxIcon.Error);
        }
        #endregion
        

        #endregion