Function gtk4_sys::gtk_widget_class_add_binding_signal

pub unsafe extern "C" fn gtk_widget_class_add_binding_signal(
    widget_class: *mut GtkWidgetClass, 
    keyval: c_uint, 
    mods: GdkModifierType, 
    signal: *const c_char, 
    format_string: *const c_char,
     ...
)