[Qt-interest] How can I know A is derived from B in QT

[Alessandro Portale]

yi xia schrieb:
> Hi ALL,
> Is there any method to tell me whether A is derived from B?
>  
> I use dynamic_cast, but on my buggy arm board, this method will cause 
> the board to hang.

If 'A' is derived from QObject, you might give qobject_cast a try:
    http://doc.qt.nokia.com/latest/qobject.html#qobject_cast

If that does also not work, there is still QObject::inherits():
    http://doc.qt.nokia.com/latest/qobject.html#inherits

Alessandro