gistfile1.txt

error[E0277]: the trait bound `gtk4::ListBox: IsSubclassable<job_list::imp::JobList>` is not satisfied
   --> src\job_list\imp.rs:11:23
    |
11  |     type ParentType = gtk::ListBox;
    |                       ^^^^^^^^^^^^ the trait `IsSubclassable<job_list::imp::JobList>` is not implemented for `gtk4::ListBox`
    |
    = help: the following other types implement trait `IsSubclassable<T>`:
              Adjustment
              ApplicationWindow
              CellArea
              CellAreaContext
              CellRenderer
              CellRendererText
              CheckButton
              ContentProvider
            and 41 others
note: required by a bound in `gtk4::subclass::prelude::ObjectSubclass::ParentType`
   --> C:\Users\james\.cargo\registry\src\github.com-1ecc6299db9ec823\glib-0.16.2\src\subclass\types.rs:553:22
    |
553 |     type ParentType: IsSubclassable<Self>
    |                      ^^^^^^^^^^^^^^^^^^^^ required by this bound in `gtk4::subclass::prelude::ObjectSubclass::ParentType`

imp.rs

use gtk::glib;
use gtk::subclass::prelude::*;

#[derive(Default)]
pub struct JobList;

#[glib::object_subclass]
impl ObjectSubclass for JobList {
    const NAME: &'static str = "RnotifydMainPaned";
    type Type = super::JobList;
    type ParentType = gtk::ListBox;
}

// Trait shared by all GObjects
impl ObjectImpl for JobList {}

// Trait shared by all widgets
impl WidgetImpl for JobList {}

// Trait shared by all buttons
impl ButtonImpl for JobList {}

mod.rs

mod imp;

use glib::Object;
use gtk::glib;

glib::wrapper! {
    pub struct JobList(ObjectSubclass<imp::JobList>)
        @extends gtk::ListBox, gtk::Widget,
        @implements gtk::Accessible, gtk::Buildable, gtk::ConstraintTarget;
}