How can I call a C++ function knowing its function string?

[lni]

Hi,

If some one tells me there is a c++ member function, say "foo". How can I use Q_GADGET (not Q_OBJECT) to call this function?

MyClass obj;
obj.foo();

However, foo is passed to me by QString "foo". The only thing I am told is that foo return void and has no argument.

Any help is appreciated.