Hi all,

My requirement is to cast an object of type shared_ptr as void*, so that I can send it to a callback function that accepts a void*.  I cannot change callback the function signature because it is part of an existing legacy code.

In the existing code, I am sending a raw object pointer (instead of shared_ptr).  Now, if I want to pass a shared_ptr, it won't compile because I cannot cast the shared ptr to void*. 

Can anyone suggest some workaround for this.  I tried searching the mailing lists and internet, but not much luck.