Code design QVariant or template<class T>

Hello, i've a problem with my code design. I've read this manual about QVariant: http://doc.trolltech.com/4.3/qvariant.html

Waht is the diffrent between code1 and code2?

code1:

Code:

---

QString CMainWindow::myFunction( QVariant num ) {
   QString tmp;
   // do something
 
   return tmp;
}

---

code2:

Code:

---

template <class T> QString CMainWindow::myFunction( T num ) {
   QString tmp;
   // do something  
 
   return tmp;
}

---

Is code1 the same as code2 only in Qt-Style?

so long

jd

code1 is a single method handling all registered types. code2 is a series of methods for different datatypes.