This function shows the alert to the user.
The callback will be called when the alert is dismissed. It should call gtk.alert_dialog.AlertDialog.chooseFinish to obtain the result.
It is ok to pass NULL for the callback if the alert does not have more than one button. A simpler API for this case is gtk.alert_dialog.AlertDialog.show.
the parent gtk.window.Window
a gio.cancellable.Cancellable to cancel the operation
a callback to call when the operation is complete
This function shows the alert to the user.
The callback will be called when the alert is dismissed. It should call gtk.alert_dialog.AlertDialog.chooseFinish to obtain the result.
It is ok to pass NULL for the callback if the alert does not have more than one button. A simpler API for this case is gtk.alert_dialog.AlertDialog.show.