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docs: Migration guide additions

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Matthias Clasen 2020-06-27 17:31:22 -04:00
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docs/reference/gtk/migrating-3to4.md
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@ -457,6 +457,11 @@ as property. GtkNotebook and GtkAssistant are similar.
gtk4-builder-tool can help with this conversion, with the --3to4 option
of the simplify command.
### Adapt to GtkScrolledWindow API changes
The constructor for GtkScrolledWindow no longer takes the adjustments
as arguments - these were almost always %NULL.
### Adapt to GtkBin removal
The abstract base class GtkBin for single-child containers has been
@ -940,3 +945,18 @@ You can replace calls to <function>gtk_dialog_run()</function>
by specifying that the #GtkDialog must be modal using
gtk_window_set_modal() or the %GTK_DIALOG_MODAL flag, and
connecting to the #GtkDialog::response signal.
## Changes to consider after the switch
GTK 4 has a number of new features that you may want to take
advantage of once the dust has settled over the initial migration.
### Consider porting to the new list widgets
In GTK 2 and 3, GtkTreeModel and GtkCellRenderer and widgets using
these were the primary way of displaying data and lists. GTK 4 brings
a new family of widgets for this purpose that uses list models instead
of tree models, and widgets instead of cell renderers.
To learn more about the new list widgets, you can read the [List Widget
Overview](#ListWidget).