语法：

steam_get_quota_free();

返回： Real（实数）

描述

With this function you can find out how much free space is left for the user of the Steam Cloud quota. The value returned is in bytes.

例如：

if steam_is_cloud_enabled_for_app()
   {
   quota = steam_get_quota_free();
   }

The above code checks to see if the steam cloud is enabled for the game and if so it gets the size of the free storage space and stores it in a variable.