GUILayoutOption 界面布局选项

Class internally used to pass layout options into GUILayout functions. You don't use these directly, but construct them with the layouting functions in the GUILayout class.

内部类用于传递布局选项给GUILayout函数。你不要直接使用这些，而是在GUILayout类布局函数中构造它们。

参见：GUILayout.Width, GUILayout.Height, GUILayout.MinWidth, GUILayout.MaxWidth, GUILayout.MinHeight, GUILayout.MaxHeight, GUILayout.ExpandWidth, GUILayout.ExpandHeight.