[Qt-interest] How associate slot sender with my data object?

[Martin Gebert]

> The key to the question is how can I also associate the sender with an instance of MyObject?  
>
> Must I make an external stl map collection or is there a more "QT" like way?
>
>   

A map<QRadioButton*, MyObject*> (use QMap instead of std::map) would be
one solution. The other one would be to use the QSignalMapper and set up
a mapping for each radio button to the appropriate MyObject (BTW,
shouldn't that be named MyClass?). Your slot then reads

channelChanged(MyObject*)

and you get both your object and by using sender() the associated
button. Note that MyObject has to be derived from QObject for this.
Is this what you intended?

Martin