GUI.FocusWindow 焦点窗口

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
	private Rect windowRect = new Rect(20, 20, 120, 50);
	private Rect windowRect2 = new Rect(20, 80, 120, 50);
	void OnGUI() {
		windowRect = GUI.Window(0, windowRect, DoMyFirstWindow, "First");
		windowRect2 = GUI.Window(1, windowRect2, DoMySecondWindow, "Second");
	}
	void DoMyFirstWindow(int windowID) {
		if (GUI.Button(new Rect(10, 20, 100, 20), "Focus other"))
			GUI.FocusWindow(1);

	}
	void DoMySecondWindow(int windowID) {
		if (GUI.Button(new Rect(10, 20, 100, 20), "Focus other"))
			GUI.FocusWindow(0);

	}
}

private var windowRect : Rect = Rect(20, 20, 120, 50);
private var windowRect2 : Rect = Rect(20, 80, 120, 50);

function OnGUI () {
	//注册2个窗口
	windowRect = GUI.Window(0, windowRect, DoMyFirstWindow, "First");
	windowRect2 = GUI.Window(1, windowRect2, DoMySecondWindow, "Second" );
}

function DoMyFirstWindow (windowID : int) {
	if (GUI.Button (Rect(10,20,100,20), "Focus other"))
		//使窗口2成为活动窗口
		GUI.FocusWindow(1);
}

function DoMySecondWindow (windowID : int) {
	if (GUI.Button (Rect(10,20,100,20), "Focus other"))
		//使窗口1成为活动窗口
		GUI.FocusWindow(0);
}