// When pressed the button, selects the "username" Textfield.
var username : String = "username";
var pwd : String = "a pwd";
function OnGUI () {
// Set the internal name of the textfield
GUI.SetNextControlName ("MyTextField");

// Make the actual text field.
username = GUI.TextField (Rect (10,10,100,20), username);
pwd = GUI.TextField (Rect (10,40,100,20), pwd);

// If the user presses this button, keyboard focus will move.
if (GUI.Button (Rect (10,70,80,20), "Move Focus"))
GUI.FocusControl ("MyTextField");
}

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
public string username = "username";
public string pwd = "a pwd";
void OnGUI() {
GUI.SetNextControlName("MyTextField");
username = GUI.TextField(new Rect(10, 10, 100, 20), username);
pwd = GUI.TextField(new Rect(10, 40, 100, 20), pwd);
if (GUI.Button(new Rect(10, 70, 80, 20), "Move Focus"))
GUI.FocusControl("MyTextField");

}
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

public username as string = 'username'

public pwd as string = 'a pwd'

def OnGUI():
GUI.SetNextControlName('MyTextField')
username = GUI.TextField(Rect(10, 10, 100, 20), username)
pwd = GUI.TextField(Rect(10, 40, 100, 20), pwd)
if GUI.Button(Rect(10, 70, 80, 20), 'Move Focus'):
GUI.FocusControl('MyTextField')