Signal detail or null (default)
signal callback delegate or function to connect
void callback(string itemName, gtk.app_chooser_button.AppChooserButton appChooserButton)
itemName the name of the activated item (optional)
appChooserButton the instance the signal is connected to (optional)
Yes.After to execute callback after default handler, No.After to execute before (default)
Signal ID
Connect to CustomItemActivated signal.
Emitted when a custom item is activated.
Use gtk.app_chooser_button.AppChooserButton.appendCustomItem, to add custom items.