Inherits from ScriptableObject
Defines how GUI looks and behaves.
定义的GUI的外观和行为。
GUISkin contains GUI settings and a collection of GUIStyle objects that together specify GUI skin.
GUISkin包括GUI设置和一起指定GUISkin物体的GUIStyle集合。
Active GUI skin is get and set through GUI.skin.
激活GUISkin通过获取和设置GUI.skin。