关于parval

对parval()，属性指向很困扰
比如： baynumber = parval(2)，求注解下，为什么是（2），
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4 e7 Y* @; T8 O9 j& S9 ~. Y. g" P; s如果levelnuber=?????  求注解。。。。
9 A8 _& W0 Q( [. W( y- KFor developer use. This command is used inside a function that is called by the nodefunction() command. It returns the parameter passed to nodefunction specified by index as a number. The first additional parameter passed to nodefunction() is parameter 1, the second is parameter 2, etc. Parameters can also be retrieved using parnode() and parstr() for casting them as a treenode and string respectively.
0 n7 x) k- [6 k+ L" Q# F8 lExample: double passedval = parval(3);
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7 |' B% o3 n9 l. D# b+ tThis sets passedval equal to the number that was passed to nodefunction() as parameter 3.

函数解释很详细哦他应该就是个传递参数吧