java "instanceof" in c++?

[joseprl89]

Is there a similar procedure in c++ to the java "instanceof"??

I would like to tell apart from the QObject::childs() list which widgets subclass a common base class i created for my subclassed widgets, but I haven't succeeded yet, the code I'm using right now is :

void fetchChildData(QObject* vent){
    QObjectList childs = vent->children();
    for(int i = 0 ; i < childs.size() ; i++){
        displayWidget* dW = dynamic_cast<displayWidget*>(childs[i]);
        if(dW!=0){
            dW->fetchData();
        }
        fetchChildData(childs[i]);
    }
}

void fetchChildData(QObject* vent){
    QObjectList childs = vent->children();
    for(int i = 0 ; i < childs.size() ; i++){
        displayWidget* dW = dynamic_cast<displayWidget*>(childs[i]);
        if(dW!=0){
            dW->fetchData();
        }
        fetchChildData(childs[i]);
    }
}

To copy to clipboard, switch view to plain text mode 

But it won't make the trick,... Any help would be really appreciated.