Q_ARG and templates

[Adam Badura]

It is very difficult to work reasonably with Q_ARG and Q_RETURN_ARG when having template types. In the end I had to use meta-function for naming types like:

@template< typename T >
class TypeQtName;

#define MAKE_TYPEQTNAME( T )
template<>
class TypeQtName< T >
{
public:
static const char* const get()
{
return #T;
}
}; \

MAKE_TYPEQTNAME( bool )
/* ... */@

But this approach is far from being elegant.

What I think could be useful is to extend Qt so that it could locally deal with typeid result (the std::type_info class). That is not portable even across two executions of the same program in the same environment. But within a single execution it is and that does cover lots of cases.

What do you think about it?