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?

Answer 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