Obtaining the Button Clicked after a Clicked() is emitted in Qt (C++)

Question

I was wondering, once a clicked() is emitted by a button is there any way of finding out what button emitted it without overloading the click() function? (I have a bunch of buttons with almost the same function but different text, which is the defining element of each button).

Thanks in advance!

Answer 1

Within your slot, you can call the sender() function to get the QObject that sent you the clicked() signal. It returns a QObject * . Use qobject_cast to cast the QObject * to QPushButton * .

Documentation here .

Answer 2

You probably want to use a QSignalMapper .

In your case, if it's only the text you are interested in then connect the clicked() signal on each button to the map() slot on your signal mapper and then set a string mapping with setMapping( QObject * sender, const QString & text ) . The signal mapper will then re-emit the signal in the form of it's own mapped( const QString & text ) signal with the correct text for the button that was clicked.