std::ios_base::event_callback

 

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ios_base::event_callback

 

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

The type of function callbacks that can be registered using register_callback() to be called on specific events.

type is a value of type ios_base::event which indicates the type of the event that will invoke this callback.

ios refers to the stream object for which the callback is invoked: *this is passed as the argument when callbacks are invoked by std::ios_base and std::basic_ios member functions.

index is the user-provided value passed to register_callback() when registering the function.

See also

copyfmt	copies formatting information (public member function of std::basic_ios<CharT,Traits>)
imbue	sets locale (public member function)
(destructor) [virtual]	destructs the object (virtual public member function)
register_callback	registers event callback function (public member function)