User defined conversion operator as argument for printf
- by BC
I have a class that defined a user defined operator for a TCHAR*, like so
CMyClass::operator const TCHAR*() const
{
// returns text as const TCHAR*
}
I want to be able to do something like
CMyClass myClass;
_tprintf(_T("%s"), myClass);
or even
_tprintf(_T("%s"), CMyClass(value));
But when trying, printf always prints (null) instead of the value. I have also tried a normal char* operator, as well variations with const etc.
It only works correctly if I explicitly call the operator or do a cast, like
_tprintf(_T("%s\n"), (const TCHAR*)myClass);
_tprintf(_T("%s\n"), myClass.operator const TCHAR *());
However, I don't want to cast. How can this be achieved?
Note, that a possibility is to create a function that has a parameter of const TCHAR*, so that it forcible calls the operator TCHAR*, but this I also don't want to implement.
