std::ios_base::event

 

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ios_base::event

ios_base::event_callback

 

enum event { erase_event, imbue_event, copyfmt_event };

Specifies the event type which is passed to functions registered by register_callback() on specific events. The following constants are defined:

Constant	Explanation
erase_event	issued on ~ios_base() or basic_ios::copyfmt() (before the copy of members takes place)
imbue_event	issued on imbue()
copyfmt_event	issued on basic_ios::copyfmt() (after the copy of members takes place, but before the exception settings are copied)