Re: TreeView - set border on individual cells

[Emmanuele Bassi <ebassi gmail com>]

On Sat, 6 Apr 2019 at 19:05, Eric Cashon via gtk-app-devel-list <
gtk-app-devel-list gnome org> wrote:



> static gboolean draw_rectangle(GtkWidget *tree_view, cairo_t *cr, gpointer
> data)
>   {
>     GtkTreePath *path=gtk_tree_path_new_from_indices(row_g, -1);
>
>     g_print("Draw Rectangle %i %i\n", row_g, column_g);
>     GdkWindow *win=gtk_tree_view_get_bin_window(GTK_TREE_VIEW(tree_view));
>     cairo_t *cr2=gdk_cairo_create(win);

Don't ever do this.

There's a reason why you're getting a deprecation warning: you're already
getting a Cairo context from the "draw" signal; use that to draw. There's
no reason whatsoever to create a new Cairo context for a GdkWindow in GTK3.

Ciao,
 Emmanuele.

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