gtk:app-chooser-button-set-active-custom-item (widget name)

widget -- a gtk:app-chooser-button widget
name -- a string with the name of the custom item

Selects a custom item previously added with the gtk:app-chooser-button-append-custom-item function. Use the gtk:app-chooser-refresh function to bring the selection to its initial state. The gtk:app-chooser-button implementation is deprecated since 4.10.