C++ register callback from server -


i've prototype of callback as:

typedef void (*update)(int id,...); typedef void (*destroy)(int id,...); typedef void (*create)(int id, update* _update, destroy* _destroy);

and create callbacks function:

void updatecb(int id,...){/*add id collection*/} void destroycb(int id,...){/*remove id collection*/} void createcb(int id,update* _update, destroy* _destroy) {      //register callbacks      *_update = updatecb;       *_destroy = destroycb; }

when register callbacks compiler give me error:

error: cannot convert 'classname::updatecb' type 'void (classname::)(int,...)' type 'update {aka void (*)(int..)}'

how can valid register callbacks?

you trying use member functions impossible in case. happens because every member function ( if not static ) carries hidden pointer class instance called this. need use global functions or static member functions.


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