How to execute a function after click particular button in PyQt5 Dialog Button Box?

Question

Here is my Dialog Button Box design on Python:

    self.buttonBox = QtWidgets.QDialogButtonBox(Frame)
    self.buttonBox.setGeometry(QtCore.QRect(200, 216, 144, 27))
    self.buttonBox.setFont(font)
    self.buttonBox.setAcceptDrops(False)
    self.buttonBox.setStandardButtons(QtWidgets.QDialogButtonBox.Discard|QtWidgets.QDialogButtonBox.Save)
    self.buttonBox.setObjectName("buttonBox")

There are two buttons as shown above, which are Discard and Save. How to execute a particular unique function when I click Save or Discard. What I have tried is:

    self.buttonBox.accepted.connect(self.save)
    self.buttonBox.rejected.connect(self.discard)

However, the function execute only when I clicked Save and did not work when I clicked Discard. How to handle this?

fitzme · Accepted Answer · 2022-04-13 21:37:15Z

1

Discard is a destructive button, not a reject button. You could either:

Use Cancel, Close, or Abort and link to the rejected signal as you are already doing
If you need to use Discard, connect to the clicked signal and just verify in your self.discard function that the clicked button (passed with the signal) was the Discard button before doing anything

edited Apr 13, 2022 at 21:37

answered Apr 13, 2022 at 5:05

fitzme

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2 Comments

ekhumoro Over a year ago

There's no buttonClicked signal, only clicked.

fitzme Over a year ago

Apologies, I was thinking of QMessageBox - you are right that QDialogButtonBox uses 'clicked' instead. I will edit my post to reflect, but I think the same solution applies.

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