Here :name is a parameter that must be filled out when loading. The parameter is automatically filled out from the parent form if possible. If the parameter cannot be filled out, this event is called and a linked macro can fill out the parameter.
这里：name 是一个在加载必须填写的参数。在可能的情况下，参数被自动从上一级表格中选出并填写。如果参数无法被填入，则调出这一事件，同时链接的宏可以填入参数。