Nautilus Extension Problem

[Ozojie Chikelu <ozojiechikelu gmail com>]

Hi

I have this application that am developing and I want to integrate it to nautilus file manager on ubuntu 12.04 and am facing problems

according to the guide here http://taschenorakel.de/svn/repos/bulldozer/tags/release-0.1.0/documentation/NautilusExtensions.html I should be able to build this

#include <iostream>

#include <nautilus/libnautilus-extension/nautilus-menu-provider.h>
#include <nautilus/libnautilus-extension/nautilus-extension-types.h>
#include <nautilus/libnautilus-extension/nautilus-menu-item.h>
#include <nautilus/libnautilus-extension/nautilus-info-provider.h>
#include <nautilus/libnautilus-extension/nautilus-file-info.h>
#include <glib-object.h>

using namespace std;
GList* nautilus_menu_provider_get_background_items(NautilusMenuProvider *provider,
                                                  GtkWidget *window,
                                                  NautilusFileInfo *current_folder);

void move_file(const char *old_path, const char* new_path);
int main()
{
    NautilusMenuProviderIface a_iface;

    return 0;
}

GList* nautilus_menu_provider_get_background_items(NautilusMenuProvider *provider,
                                                   GtkWidget *window,
                                                   NautilusFileInfo *current_folder)
{
    NautilusMenuItem *item;
    GList *items;

    item = nautilus_menu_item_new("Relax::root", "relax", "add to relax", NULL);

    g_signal_connect (item, "activate", G_CALLBACK (test_stuff), provider);

    g_object_set_data (NAUTILUS_MENU_ITEM (item), "folder", nautilus_file_info_get_uri(current_folder));

    items = g_list_append(items, item);

    return items;
}

void test_stuff(NautilusMenuItem *item, gpointer user_data)
{
    char* folders;
    folders = g_object_get_data(item, "folder");

    cout << folders;
}

but it doesn't build.

I get this error:

/home/zouga/DevStuffs/couttest/main.cpp:49: error: cannot convert 'NautilusMenuItem* {aka _NautilusMenuItem*}' to 'GObject* {aka _GObject*}' for argument '1' to 'void g_object_set_data(GObject*, const gchar*, gpointer)'

please what am I doing wrong