Make a label with a foldout arrow to the left of it.
// Create a foldable menu that hides/shows the selected transform // position. // if no Transform is selected, the Foldout item will be folded until // a transform is selected. class FoldoutUsage extends EditorWindow { var showPosition : boolean = true; var status : String = "Select a GameObject"; @MenuItem("Examples/Foldout Usage") static function Init() { var window = GetWindow(FoldoutUsage); window.Show(); } function OnGUI() { showPosition = EditorGUILayout.Foldout(showPosition, status); if(showPosition) if(Selection.activeTransform) { Selection.activeTransform.position = EditorGUILayout.Vector3Field("Position", Selection.activeTransform.position); status = Selection.activeTransform.name; } if(!Selection.activeTransform) { status = "Select a GameObject"; showPosition = false; } } function OnInspectorUpdate() { this.Repaint(); } }