Problem with Cancel button of GenericDialog?

[WC802]

Hi!
I've been trying to use the GenericDialog function but when clicking the Cancel button the following error appears: 'NoneType' object has no attribute 'set_root_widget'.
Reading the function this seems to come from this lines:
self._base_app_instance = None

self._old_root_widget = None

I don't know if I'm using it wrong.
Thank you very much.

[dddomodossola]

Hello @WC802 ,

I'm unable to reproduce the problem. Can you show me how you use the GenericDialog?
However an usage example is within the widgets_overview_app.py (

remi/examples/widgets_overview_app.py

Line 171 in 06808ad

self.dialog = gui.GenericDialog(title='Dialog Box', message='Click Ok to transfer content to main page', width='500px')

)
Note that when you call dialog.show you must pass the application instance as argument (

remi/examples/widgets_overview_app.py

Line 203 in 06808ad

self.dialog.show(self)

).

Have a nice day,
Davide

[WC802]

Thank you very much for your answer!
I was able to solve it with the example, which I didn't find earlier.
Also, I was trying to do a widget for error handling to make a warning pop up with a message that the user can dismiss. This is what GenericDialog does, except it has two buttons. Although I managed to add the class myself, was there already a class that did this? I couldn't find it in the documentation. Or a way to remove the button.

[dddomodossola]

The dialog buttons are 'cancel' and 'conf'. To hide the cancel button you can do:

mydialog.cancel.css_display = 'none'

[WC802]

Thank you very much for answering so fast!