gistfile1.cs

using UnityEngine;
using UnityEditor;

public class RenderGameViewCamerasScript : EditorWindow
{
	[MenuItem("EditorGUIUtility/RenderGameViewCameras")]
	static void OpenWindow ()
	{
		RenderGameViewCamerasScript window = GetWindow<RenderGameViewCamerasScript> ();	
		window.position = new Rect (50, 50, 500, 500);
	}

	private Rect rect1, rect2;
	void OnGUI ()
	{
		rect1 = new Rect (0, 0, 300, 200);
		//rect2は決め打ち。こうしないと描画がおかしくなる
		rect2 = new Rect (0, 22, position.width, position.height);
		EditorGUIUtility.RenderGameViewCameras (rect1, rect2, true, true);
		this.Repaint ();
		//強制的にGUI終了させないとNULLで怒られる。非推奨関数
		EditorGUIUtility.ExitGUI ();
	}
	
	
}