它检查这个问题计数值是否是目前最大的。如果当前集合中还有其他问题，就再次递归运行这个例程。
It checks to see whether that's the highest question count so far, and if any other questions are in the current set, it sends them to run through the routine again.
在注册回调例程之前，使用EMCreateRecursionID函数获得一个递归id很有用。
Before registering the callback routine, it is useful to obtain a recursion ID using the EMCreateRecursionID function.
易语言漫水法递归实现源码例程程序演示了递归方法的漫水法填充效果。
Easy language routines source diffuse recursive method demonstrates the recursive method of flood fill effect.
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