Disabling custom button inside QDialogButtonBox

Question

I have a QDialogButtonBox that contains the two custom buttons Start and Cancel. According to this answer, the best way to add these buttons is as follows:

button_box = QDialogButtonBox()
button_box.addButton("Launch", QDialogButtonBox.ButtonRole.AcceptRole)
button_box.addButton("Cancel", QDialogButtonBox.ButtonRole.RejectRole)

One of the two buttons must now be deactivated. I tried to adopt the code from here:

button_box.button(QDialogButtonBox.ButtonRole.AcceptRole).setDisabled(True)

but this seems only to work with the default qt buttons like Ok etc. I came up with the following working solution, but I wanted to ask if there is a more direct way I missed.

for btn in button_box.buttons():
    if btn.text() == "Launch":
        btn.setDisabled(True)

score 2 · Accepted Answer · answered May 02 '23 at 08:39

2

You should be able to retrieve the button from the addButton function, and save it to a variable according to the docs.

#create button box w/ custom buttons
button_box = QDialogButtonBox()
launch_button = button_box.addButton("Launch", QDialogButtonBox.ButtonRole.AcceptRole)
cancel_button = button_box.addButton("Cancel", QDialogButtonBox.ButtonRole.RejectRole)

# disable the launch button
launch_button.setDisabled(True)

answered May 02 '23 at 08:39

Hoodlum

950
2
13

Thanks. I got fooled by PyCharm. They only show the first overload which returns None – sebwr May 02 '23 at 09:54
@sebwr IDE autocompletion is useful, but often results in becoming lazy: studying the documentation is **always** required. – musicamante May 02 '23 at 11:19

Disabling custom button inside QDialogButtonBox

1 Answers1