private void button1_Click(object sender, EventArgs e)
{
settings.nickname = nickTextBox.Text;
settings.server.username = usernameTextBox.Text;
settings.server.password = passwdTextBox.Text;
login_cmdid = ttclient.DoLogin(nickTextBox.Text, usernameTextBox.Text,
passwdTextBox.Text);
button1.Enabled = false;
nickTextBox.Enabled = false;
usernameTextBox.Enabled = false;
passwdTextBox.Enabled = false;
}