Legacy Documentation: Version 4.2
GUI.TextField
static function TextField(position: Rect, text: string): string;
static string TextField(Rect position, string text);
static def TextField(position as Rect, text as string) as string
static function TextField(position: Rect, text: string, maxLength: int): string;
static string TextField(Rect position, string text, int maxLength);
static def TextField(position as Rect, text as string, maxLength as int) as string
static function TextField(position: Rect, text: string, style: GUIStyle): string;
static string TextField(Rect position, string text, GUIStyle style);
static def TextField(position as Rect, text as string, style as GUIStyle) as string
static function TextField(position: Rect, text: string, maxLength: int, style: GUIStyle): string;
static string TextField(Rect position, string text, int maxLength, GUIStyle style);
static def TextField(position as Rect, text as string, maxLength as int, style as GUIStyle) as string
Parameters

position Rectangle on the screen to use for the text field.
text Text to edit. The return value of this function should be assigned back to the string as shown in the example.
maxLength The maximum length of the string. If left out, the user can type for ever and ever.
style The style to use. If left out, the textField style from the current GUISkin is used.
Returns
string The edited string.
Description

Make a single-line text field where the user can edit a string.

	var stringToEdit : String = "Hello World";
	function OnGUI () {
		// Make a text field that modifies stringToEdit.
		stringToEdit = GUI.TextField (Rect (10, 10, 200, 20), stringToEdit, 25);
	}

using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour {
    public string stringToEdit = "Hello World";
    void OnGUI() {
        stringToEdit = GUI.TextField(new Rect(10, 10, 200, 20), stringToEdit, 25);
    }
}

import UnityEngine
import System.Collections

public class Example(MonoBehaviour):

	public stringToEdit as string = 'Hello World'

	def OnGUI() as void:
		stringToEdit = GUI.TextField(Rect(10, 10, 200, 20), stringToEdit, 25)