What difference between _set_purecall_handler and _set_purecall_handler_m?

Question

I debug a code, and I use _set_purecall_handler to set function that be called when pure call virtual function happened. This exemple from MSDN work nice for me and do what I want: code from msdn
So, you can see the declaration of the function

    void myPurecallHandler(void)
    {
     printf("In _purecall_handler.");
     exit(0);
    }

this function MUST return a void value and don't have any arguments, this function is called when a pure call virtuall function happened. I have trying to overload this function to passe it a parameters (The line number where pure call virtuall function happened ), but can't success.
If you see, there is another function there: _set_purecall_handler_m
What is the difference between this function and _set_purecall_handler?

Thanks a lot,

Answer 1

_set_purecall_handler_m is for use with mixed mode CRT when using C++ and C++-CLI. If you are not working with C++-CLI you really don't need to use it. If however you are creating say a DLL that may be used with C++-CLi applications you might want to consider using it.