Have anyone did template parameter or template class with QT?

[yyiu002]

What I want to do is create a function called addObject(const T* ob), then other class call this function to add an instance of a class. Is all the classes in QT inherited from QObject by default? If it is the case, maybe I can change my function to be like following: addObject(QObject * ob). But I doubt that.

If not, how can achieve this? I have tried with addObject(void * ob), seems still couldn't compile, anyone got a clue?

[ChrisW67]

Explain why you would want to do this? What problem are you trying to solve.

Many Qt classes are derived from QObject, but not all.

[Vit Stepanek]

Each pointer can be converted to a void*. If it doesn't work, the problem lies in some other place. But I'm not saying you should use void*.

[Zlatomir]

Answer to question is: yes, you can program templates (http://www.cplusplus.com/doc/tutorial/templates/) with Qt. (check the link, maybe this is what you are looking for ;) )

And to add to what ChrisW67 said: the solution is to check the documentation and see what class derive from what, and, as ChrisW67 said: give more details about the problem you are trying to solve, so that we can give better advices.

[tbscope]

You might want to try the factory design pattern:
http://cartan.cas.suffolk.edu/oopdocbook/opensource/factory.html