Calling a function with arguments when a QPushButton is clicked

Question

I want to call a function function(QPushButton button) when the user clicks a button. I tried connect(myButton, SIGNAL(clicked()), this, SLOT(myFunction(myClass))); but it does not work. I could do a separate function for slot but i need to create connections dynamicly for buttons created by user.

Does this answer your question? [Qt 5 assign slot with parameters to a QPushButton](https://stackoverflow.com/questions/21150890/qt-5-assign-slot-with-parameters-to-a-qpushbutton) — Rinat Veliakhmedov, Dec 27 '19 at 11:27
These days the best option is usually a lambda capturing the button. — Frank Osterfeld, Dec 27 '19 at 12:01

score 1 · Answer 1 · answered Dec 27 '19 at 11:29

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You can get the button using sender() function. This function is used to get the senders in slots. Then you have to cast it to a class (in this case QPushButton) to be able to use it. If there is a need to pass another argument, please check out the answer of this question.

answered Dec 27 '19 at 11:29

arsdever

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@BeetMacol Then please check out the Q&A I menitioned – arsdever Dec 27 '19 at 11:38

score 0 · Accepted Answer · answered Dec 27 '19 at 12:00

I found a solution to my problem. @Rinat Veliakhmedov told me to check that question, but QSignalMapper is deprected and does not work with custom objects. I searched for a replacement for this method and found that theard. Solution with emit myFunction(myClass) is perfect for my code.

Calling a function with arguments when a QPushButton is clicked

2 Answers2