Glade Ubuntu Error (Python)

Question

I am making an application using glade and python in Ubuntu. I used the about dialog widget to make an about page that is accessed via a drop down menu. When I open this about dialog the first time it works fine. When I close it with the 'x' in the top left corner it will not reopen. I have my 'delete-event' signal bound to a function close_about_window() which looks like this.

def close_about_window(self, *args):

---- self.about_window.hide()

Also if anyone knows the signal for the "close" button located at the bottom of the screen by license and credits that would be greatly appreciated.

José Fonte · Accepted Answer · 2017-05-30 20:05:28Z

1

Since the About page is a Dialog, when you run the dialog you can connect a callback to the response signal and you will get a response_id.

The body of your callback could be something like this:

if (response_id == Gtk.ResponseType.CANCEL || response_id == Gtk.ResponseType.DELETE_EVENT) {
    dialog.hide_on_delete ();
}

You also have the Dialog close signal which will work for keybindings, let's say, pressing ESC.

edited May 30, 2017 at 20:05

answered May 28, 2017 at 23:09

José Fonte

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5 Comments

andlabs Over a year ago

The response signal will cover everything, including keybindings.

José Fonte Over a year ago

yes it will, it's just a note to that signal existence. Thanks @andlabs

TingPing Over a year ago

You only set hide_on_delete() once, not in the callback.

José Fonte Over a year ago

@TingPing Check this and check the about dialog example.

José Fonte Over a year ago

No problem @TingPing It also improves the discussion. GL Peace

Daniel · Accepted Answer · 2017-05-29 03:36:23Z

0

So the solution to the problem is really simple. I realized that a dialog box is not the same as a window. You want to show the window using .run() not .show_all() or .show(). Use .run() and then in the same function use .hide(). Your open_about_dialog() function will look like this.

def open_about_dialog():
    self.about_dialog.run()
    self.about_dialog.hide()

Just so there is no issue I imported my object from my glade file using the builder builder.get_object("about_dialog")

edited May 29, 2017 at 3:36

answered May 29, 2017 at 2:03

Daniel

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6 Comments

andlabs Over a year ago

You can show the window using show_all(); in this case, though, your code returns immediately and you are responsible for handling response AND the delete-event yourself. You have to do the latter too because GtkWindow's default delete-event destroys the window, and GtkDialog inherits from GtkWindow without overriding that. In fact, this is probably the bug with your original code: delete-event requires you to return a boolean value that decides whether the default handler (that is, GtkWindow's) gets run or not, and you're not doing that. IDK how it works in Python though, sorry.

andlabs Over a year ago

(GtkDialog.run() provides its own handlers for response and delete-event, as the GTK+ documentation points out.)

Daniel Over a year ago

Yes thank you. I figured that the delete event was destroying the window even though I didn't write that in. I only now thought to check the parent.

theGtknerd Over a year ago

Keep in mind that you can set response id's to buttons in Glade also. -3 is Gtk.ResponseType.ACCEPT and -6 is Gtk.ResponseType.CANCEL. This saves a lot of hand written code.

TingPing Over a year ago

You should avoid .run() though as it creates another mainloop.

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