/// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            try
            {
                _connection.MessageGrabber.Remove(to_Jid);
                _connection.PresenceGrabber.Remove(to_Jid);

                MucManager mucManager = new MucManager(_connection);
                mucManager.LeaveRoom(to_Jid, _connection.MyJID.User);
                Util.GroupChatForms.Remove(to_Jid.Bare.ToLower());

            }
            catch (Exception)
            {

            }
            _connection = null;

            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }
        private void btn_crate_Click(object sender, EventArgs e)
        {
            if (txt_pswd1.Texts.Trim()!=txt_pswd2.Texts.Trim())
            {
                MsgBox.Show(this, "CSS&IM", "两次密码不一制!", MessageBoxButtons.OK);
                return;
            }

            MJid=new Jid(txt_name.Texts.Trim().ToString(), MJid.Server, null);
            XmppCon.MessageGrabber.Add(MJid, new BareJidComparer(), new MessageCB(MessageCallback), null);

            mucManager = new MucManager(XmppCon);
            mucManager.CreateReservedRoom(new Jid(txt_name.Texts.Trim().ToString(), MJid.Server, null), new IqCB(CreateReservedRoom), null);
        }
        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            Util.GroupPresenceEvent -= new Util.PresenceHandler(Util_GroupPresenceEvent);

            RTBRecord.Dispose();
            RTBRecord = null;

            rtfSend.Dispose();
            rtfSend = null;

            if (QQcm_send_key != null)
            {
                QQcm_send_key.Dispose();
                QQcm_send_key = null;
            }

            try
            {
                XmppConn.MessageGrabber.Remove(TO_Jid);
                XmppConn.PresenceGrabber.Remove(TO_Jid);

            }
            catch (Exception)
            {

            }

            try
            {
                MucManager mucManager = new MucManager(XmppConn);
                mucManager.LeaveRoom(TO_Jid, XmppConn.MyJID.User);
            }
            catch (Exception)
            {

            }

            try
            {
                Util.GroupChatForms.Remove(TO_Jid.Bare.ToLower());
            }
            catch (Exception)
            {

            }

            if (emotionDropdown != null)
            {
                emotionDropdown.Dispose();
            }

            if (chatGroupRoomSetForm != null)
            {
                chatGroupRoomSetForm.Dispose();
            }

            if (PicQueue != null)
            {
                PicQueue.Dispose();
            }

            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);

            System.GC.Collect();
        }