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[code=]#include <stdlib.h>
#include <gtk/gtk.h>

typedef void (* my_function) (void *data);

static void function_fruit (void *data)
{
printf ("function Fruit with data %p\n", data);
}

static void function_strawberry (void *data)
{
printf ("function Strawberry with data %p\n", data);
}

static void function_cherry (void *data)
{
printf ("function Cherry with data %p\n", data);
}

static void single_clicked (GtkWidget *widget, void *data)
{
GtkTreeSelection *selection;
GtkTreeModel *model;
GtkTreeIter iter;
char *name;
my_function function;

selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (widget));
if (gtk_tree_selection_get_selected (selection, &model, &iter))
{
gtk_tree_model_get (model, &iter, 0, &name, -1);
printf ("row %s with data: %p, ", name, data);
free (name);

gtk_tree_model_get (model, &iter, 1, &function, -1);
(* function) (data);
}

}

static GtkTreeIter static_row (GtkTreeStore *store,
GtkTreeIter *parent, char *label, my_function function)
{
GtkTreeIter iter;

gtk_tree_store_append (store, &iter, parent);
gtk_tree_store_set (store, &iter, 0, label, 1, function, -1);

return iter;
}

static void static_store (GtkWidget *treeview)
{
GtkTreeStore *store;
GtkTreeIter iter;

store = gtk_tree_store_new (2, G_TYPE_STRING, G_TYPE_POINTER);

iter = static_row (store, NULL, "Fruit", function_fruit);
static_row (store, &iter, "Strawberry", function_strawberry);
static_row (store, &iter, "Cherry", function_cherry);

gtk_tree_view_set_model (GTK_TREE_VIEW (treeview), GTK_TREE_MODEL (store));
g_object_unref (store);
}

int main (int argc, char **argv)
{
GtkWidget *window;
GtkWidget *treeview;
GtkCellRenderer *renderer;
GtkTreeViewColumn *column;
GtkTreeSelection *selection;

gtk_init (&argc, &argv);

window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_default_size (GTK_WINDOW (window), 280, 250);

treeview = gtk_tree_view_new ();
gtk_container_add (GTK_CONTAINER (window), treeview);
gtk_widget_set_size_request (treeview, 400, 400);
selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (treeview));
gtk_tree_selection_set_mode (selection, GTK_SELECTION_NONE);
g_signal_connect (GTK_OBJECT (treeview), "cursor_changed",
G_CALLBACK (single_clicked), window);
gtk_widget_show (treeview);

renderer = gtk_cell_renderer_text_new ();
column = gtk_tree_view_column_new_with_attributes ("Fruit", renderer, "text", 0, NULL);
gtk_tree_view_append_column (GTK_TREE_VIEW (treeview), column);
gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (treeview), FALSE);

static_store (treeview);

gtk_widget_show_all (window);
gtk_tree_selection_set_mode (selection, GTK_SELECTION_BROWSE);

gtk_main ();
return 0;
}
[/code]