GUILayout.ExpandWidth
static function ExpandWidth(expand: bool): GUILayoutOption;
Description

Option passed to a control to allow or disallow horizontal expansion.

	function OnGUI () {
		GUILayout.BeginVertical();
		GUILayout.Button("Short Button", GUILayout.ExpandWidth(false));
		GUILayout.Button("Very very long Button");
		GUILayout.EndVertical();
	}