void do_something(foobar cb); // this function accepts argument which is a point of function
do_something(obj); // but obj is a function.
i think we should do it like tihs
class A {
};
class B {
};
class C {
public:
int operator () (A*,B*){
cout<<"yes"<<endl;
return 1;
}
};
typedef int (*foobar)(A*, B*);
void do_something(foobar cb) {
cout<<"something"<<endl;
}
A *aPtr=new A;
B *bPtr=new B;
C obj;
foobar fooPtr=obj.operator(); //there is still error like this "argument of type `int (C::)(A*, B*)' does not match `int (*)(A*, B*)'"
i can't correct it. but it may be helpful to you.
Hi,
i'm facing this problem may be someone on the list do have an elegant solution
class A;
class B;
class C {
int operator () (A*,B*)
};
typedef int (*foobar)(A*,B*);
void do_something(foobar cb);
C obj;
do_something(obj); *ERROR*
did try boost::function<int(A*,B*)> ftor = obj;
do_something(ftor); *ERROR*
compiler generates in both cases the following error messages
cannot convert parameter 2 from 'boost::function<Signature>' to 'int (__cdecl
*)(A *,B *)'
with
1> [
1> Signature=int (A *, B *)
1> ]
1> No user-defined-conversion operator available that can perform this
conversion, or the operator cannot be called
I can't make the corresponding class B member function static due to side-effects.
Any clue how to get rid of this?
Thanks in advance
Mike
_______________________________________________
Boost-users mailing list
Boost-users@lists.boost.org
http://lists.boost.org/mailman/listinfo.cgi/boost-users