private void Window_Closed(object sender, EventArgs e)
{
// 如果還沒登出，要登出
if (LoginIn)
{
Packet packet = new Packet();
packet.makePacketLogOut();
sendToServer(null, packet);
LoginIn = false;
}
try
{
client.close();
}
catch (Exception err)
{
Console.WriteLine(err.ToString());
}
foreach (ChatWindow chatWindow in chatWindows)
{
chatWindow.Close();
}
}