Gtk.FontButton::font-set

function callback(font_button, ):void;

The ::font-set signal is emitted when the user selects a font. When handling this signal, use Gtk.FontButton.prototype.get_font_name to find out which font was just selected.

Note that this signal is only emitted when the <emphasis>user</emphasis> changes the font. If you need to react to programmatic font changes as well, use the notify::font-name signal.

Since 2.4