c++ - typedef function pointer that takes argument ClassName* before defining ClassName? -


i have following situation:

typedef void (*f_pointer)(classname*);  class classname {     public:         f_pointer f; }

this happens because instance of classname needs pass pointer client. however, if write things in order, complains classname not declared, whatnot. however, if switch them around, complains f_pointer not being declared when declare instance in class.

so maybe i'm missing simple here, how accomplish this?

forward declaration:

class classname;  typedef (*f_pointer)(classname*);  class classname {     public:         f_pointer f; }

or shorter:

typedef (*f_pointer)(class classname*); // implicit declaration;

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