Re: [Boost-users] How to cast a boost::shared_ptr to void*

On Tue, May 10, 2011 at 9:54 AM, Mupparthy Ravindranath wrote:

Sorry for the spam. I got the answer, how to do it. Ignore my previous mail.

[quote] #include #include <iostream> using namespace std;

class A { public: void hello () { cout << "Hello, friends...!" << endl; } };

typedef boost::shared_ptr<A> APtr;

void* callbk (void* o) { APtr a = *static_cast(o); a->hello(); }

int main() { A* rawPtr = new A; boost::shared_ptr<A>sPtr(rawPtr); callbk((void*)&sPtr); return 0; } [/quote]

Not like that! That passes the address of the shared pointer, not the address of your new'd object. If it works it's by luck! - R.