EditorGUI.ObjectField
static function ObjectField(position: Rect, obj: Object, objType: Type, allowSceneObjects: bool): Object;
static Object ObjectField(Rect position, Object obj, Type objType, bool allowSceneObjects);
static def ObjectField(position as Rect, obj as Object, objType as Type, allowSceneObjects as bool) as Object
static function ObjectField(position: Rect, label: string, obj: Object, objType: Type, allowSceneObjects: bool): Object;
static Object ObjectField(Rect position, string label, Object obj, Type objType, bool allowSceneObjects);
static def ObjectField(position as Rect, label as string, obj as Object, objType as Type, allowSceneObjects as bool) as Object
static function ObjectField(position: Rect, label: GUIContent, obj: Object, objType: Type, allowSceneObjects: bool): Object;
static Object ObjectField(Rect position, GUIContent label, Object obj, Type objType, bool allowSceneObjects);
static def ObjectField(position as Rect, label as GUIContent, obj as Object, objType as Type, allowSceneObjects as bool) as Object
Parameters

position Rectangle on the screen to use for the field.
label Optional label in front of the field.
obj The object the field shows.
objType The type of the objects that can be assigned.
allowSceneObjects Allow assigning scene objects. See Description for more info.
Returns
Object The object that has been set by the user.
Description

Make an object field. You can assign objects either by drag and drop objects or by selecting an object using the Object Picker.

Ensure that the allowSceneObjects parameter is false if the object reference is stored as part of an asset, since assets can't store references to objects in a scene.
If the ObjectField is part of a custom Editor for a script component, use EditorUtility.IsPersistent() to check if the component is on an asset or a scene object.
See example in Editor class.


Object field in an Editor Window.
	//Select the dependencies of the found GameObject
	
	class EditorGUIObjectField extends EditorWindow {
		
		var obj : GameObject = null;
		
		@MenuItem("Examples/Select Dependencies")
		static function Init () {
			var window = GetWindow(EditorGUIObjectField);
			window.position = Rect(0, 0, 250, 80);
			window.Show();
		}
		
		function OnInspectorUpdate () {
			Repaint ();
		}
	
		function OnGUI () {		
			obj = EditorGUI.ObjectField(Rect(3,3,position.width - 6, 20),
					"Find Dependency",
					obj,
					GameObject);
			
			if (obj)	{	
				if (GUI.Button(Rect(3,25,position.width - 6, 20), "Check Dependencies"))
					Selection.objects = EditorUtility.CollectDependencies ([obj]);
			} else {
				EditorGUI.LabelField (Rect (3, 25, position.width - 6, 20),
					"Missing:", 
					"Select an object first");
			}
		}
	}