Re: Editable toggle (checkbox) in a GtkTreeView?

On Sun, 2003-09-21 at 10:07, Pierre Sarrazin wrote:
> Hi.  I want a GtkTreeView with an editable text column and an
> editable "toggle" (checkbox) column.  My current code has the former,
> but the latter does not work yet.  Here is how the two columns are
> added to the view:
>   renderer = gtk_cell_renderer_text_new();
>   column = gtk_tree_view_column_new_with_attributes(
>                   _("Regular expression"),
>                   renderer,
>                   "text", COLUMN_REGEX,
>                   "editable", COLUMN_EDITABLE,
>                   NULL);
>   gtk_tree_view_append_column(GTK_TREE_VIEW(tree_view), column);
>   renderer = gtk_cell_renderer_toggle_new();
>   column = gtk_tree_view_column_new_with_attributes(
>                   _("Negate"),
>                   renderer,
>                   "active", COLUMN_NEGATE,
>                   "activatable", COLUMN_EDITABLE,
>                   NULL);
>   gtk_tree_view_append_column(GTK_TREE_VIEW(tree_view), column);
> The only row in the store is added with this:
>   gtk_tree_store_append(store, &iter, NULL);
>   gtk_tree_store_set(store, &iter,
>                   COLUMN_REGEX, "foo",
>                   COLUMN_NEGATE, FALSE,
>                   COLUMN_EDITABLE, TRUE,
>                   -1);
> The store was created with this:
>   GtkTreeStore *store = gtk_tree_store_new(3,
> When I click on a the text field, I can edit it.  When I click on the
> checkbox, it does not change.
> I've looked at the "Editable Cells" demo in gtk-demo (from the
> gtk2-2.2.2-0.ximian.5.3 RPM), but it does not use "toggle" columns.
> Has anyone successfully created an editable checkbox in a GtkTreeView?

Use the toggled signal on the renderer like this :

g_signal_connect (G_OBJECT(renderer), "toggled", G_CALLBACK
(your_callback), NULL);

"your_callback" would look like this :

static void your_callback(GtkCellRendererToggle *cell,
               gchar *path_str,
               gpointer data)
        // get the treemodel from somewhere
        GtkTreeIter  iter;
        GtkTreePath *path = gtk_tree_path_new_from_string (path_str);
        gboolean enabled;
        gtk_tree_model_get_iter (model, &iter, path);
        gtk_tree_model_get (model, &iter, COLUMN_X, &enabled, -1);
        enabled ^= 1;
	// do something with the new enabled value, and set the new
	// enabled value in your treemodel
        gtk_tree_path_free (path);

I don't remember where I learned this, but I think it was from the
gtk-demo though.

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