The type of function that is used for deciding what fonts get shown in a GtkFontChooser.
GtkFontChooser
See [methodGtk.FontChooser.set_filter_func].
Gtk
a PangoFontFamily
PangoFontFamily
a PangoFontFace belonging to family
PangoFontFace
family
The type of function that is used for deciding what fonts get shown in a
GtkFontChooser
.See [method
Gtk
.FontChooser.set_filter_func].