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std::ios_base::event_callback

科技促进发展：监督办[医]基础：：活动[医]回调

typedef void (*event_callback)(event type, ios_base& ios, int index​​

可以使用register_callback()在特定事件上被召唤。

type是类型的值。ios_base::event它指示将调用此回调的事件的类型。

ios引用调用回调的流对象：*this调用时作为参数传递。std::ios_base和std::basic_ios成员职能。

index是用户提供的值传递给register_callback()注册函数时。

另见

copyfmtcopies formatting information (public member function of std::basic_ios)
imbuesets locale (public member function)
(destructor) virtualdestructs the object (virtual public member function)
register_callbackregisters event callback function (public member function)

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