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+/****************    2024-01-06   À la chasse aux widgets !    ****************/
+/*     in  >  01/GTK4/tree (learning)/The_Gnome_way/demos/gtk-demo            */
+/*                                                                            */
+/*   tree_store()    listview_words()    editable_cells()    search_entry2()  */
+/*   dnd()(=  drag and drop)    entry_undo()     expander()     textundo()    */
+/*   scale() (= scale entries from bars)    font_features()     hypertext()   */
+/*   iconview_edit() (= drag and drop icons)    image_scaling()    infobar()  */
+/*   links()     listbox_controls()     list_store()     listview_colors()    */
+/*   listview_selections()     mask(NULL)     and more...                     */
+/*                                                                            */
+/******************************************************************************/
+
+/***************     The basic ideas behind list views:     *******************/
+/*                                                                            */
+/*   The data for items is provided in the form of a model containing objects */
+/*   Widgets are created just for the viewable range of items                 */
+/*   Widgets can be recycled by binding them to different items               */
+/*   Avoid iterating over all items in the model as much as possible, and     */
+/*   just deal with the items in the visible range which are bound to widgets */
+/*   from  https://blog.gtk.org/2020/06/07/scalable-lists-in-gtk-4/           */
+/*                                                                            */
+/******************************************************************************/
+
+
+//   GtkListItemFactory is the object that is tasked with creating widgets
+//   for the items in the model.
+//   One implementations of this factory, GtkBuilderListItemFactory,
+//   is using ui files as templates for the list item widgets.
+
+
+/***************       A B O U T    T R E E S        **************************/
+/*                                                                            */
+/*  https://docs.gtk.org/gtk4/                                                */
+/*  https://docs.gtk.org/gtk4/getting_started.html                            */
+/*  https://toshiocp.github.io/Gtk4-tutorial/sec29.html <<<  TODO  (tuto)     */
+/*  Keep the "comparison chart of equivalent functionalities" (link below)    */
+/*  https://docs.gtk.org/gtk4/section-list-widget.html                        */
+/*  https://en.wikibooks.org/wiki/GTK%2B_By_Example/Tree_View                 */
+/*  https://gnome.pages.gitlab.gnome.org/libsoup/gio/GListModel.html          */
+/*  https://docs.gtk.org/gio/iface.ListModel.html   <   +++                   */
+/*                                                                            */
+/*  https://docs.gtk.org/gtk4/class.TreeListModel.html   (easy to find)       */
+/*  https://developer-old.gnome.org/gtk4/stable/GtkTreeView.html (vieux...)   */
+/*  get-path-at-pos(x,y) finds the path at these window coordinates.          */
+/*  https://blog.gtk.org/2020/09/08/on-list-models/                           */
+/*                                                                            */
+/******************************************************************************/
+
+/*..............................................................................
+ *
+ *    >>>   GtkStringList   <<<
+ *
+ * GtkStringList is a list model that wraps an array of strings.
+ * The objects in the model are of type GtkStringObject
+ * and have a “string” property that can be used inside expressions.
+ * Use it where/when you would typically use a char*[], but need a list model.
+ *
+ * Every item in a model has a position (= unsigned integer)
+ * "factories" takes care of mapping the items of the model
+ *      to widgets that can be shown in the view
+ *      by creating a listitem for each item that is currently in use.
+ * List items are always GtkListItem instances. Widgets can be recycled.
+ *
+ * GtkStringList can only handle strings.
+ * It is backed by a dynamically allocated array.
+ * GListStore is backed by a balanced tree.
+ *
+ * GTK provides functionality to make lists look and behave like trees
+ * by using the GtkTreeListModel and the GtkTreeExpander widget.
+ *
+ * Widgets are styleable using GTK CSS. Use the .rich-list style class.
+ *
+ * GListModel is an interface that represents a mutable list of GObjects.
+ *
+ *............................................................................*/
+
+