How to avoid closing of Gtk.Dialog in Python?

问题:

I have a form in a Gtk.Dialog which has an "Ok" button and a "Cancel" button.

When I click on the Ok button, the dialog returns 1 and when I click on Cancel button, it returns 0.

What I want to make is to validate the fields of the form so that if any field has invalid data, like letters in a numeric field or empty fields, the dialog can not be destroyed if Ok button is pressed.

回答1:

You could define a custom dialog. Here you can find an example. Make shure to destroy the dialog only if your validation succeded.