std::ios_base::event_callback
From cppreference.com
| typedef void (*event_callback)(event type, ios_base& ios, int index); |
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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
| copies formatting information (public member function of std::basic_ios) | |
| sets locale (public member function) | |
| [virtual] |
destructs the object (virtual public member function) |
| registers event callback function (public member function) |