private void FrmGroupChat_FormClosed(object sender, FormClosedEventArgs e)
{
if (_roomJid != null)
{
mm.ExitRoom(_roomJid, _nickname);
// Remove the Message Callback in the MessageFilter
_xmppClient.MessageFilter.Remove(_roomJid);
// Remove the Presence Callback in the MessageFilter
_xmppClient.PresenceFilter.Remove(_roomJid);
}
}
