gnome panel applet won't compile

[Bileg Battumu <fantasyleague0629 gmail com>]

I was trying to compile official Hello World example of gnome applet and end up having errors.
Here is the source code: 
-----------------------
#include <gtk/gtk.h>
#include <panel-applet.h>
static gboolean hello_world_applet_start (PanelApplet *applet) {
    GtkWidget *label;
    label = gtk_label_new ("Hello World");
    gtk_container_add (GTK_CONTAINER (applet), label);
    gtk_widget_show_all (GTK_WIDGET (applet));
    return TRUE;
}
static gboolean hello_world_factory_callback (PanelApplet  *applet, const gchar *iid, gpointer data) {
    gboolean retval = FALSE;
    if (g_strcmp0 (iid, "HelloWorldApplet") == 0)
        retval = hello_world_applet_start (applet);
    return retval;
}
PANEL_APPLET_OUT_PROCESS_FACTORY ("HelloWorldFactory", PANEL_TYPE_APPLET, hello_world_factory_callback, NULL)

Compile command: (copied off of some guys post)
---------------------------

g++ -Wall -DGTK_DISABLE_SINGLE_INCLUDES -DGDK_DISABLE_DEPRECATED -DGTK_DISABLE_DEPRECATED -DGSEAL_ENABLE `pkg-config --cflags --libs gtk+-3.0 libpanelapplet-4.0` *.cpp -o helloworld


Error message:
--------------------------
/usr/include/gnome-panel-4.0/libpanel-applet/panel-applet.h:169:13: error: ‘GtkActionGroup’ has not been declared
             GtkActionGroup     *action_group);

             ^
/usr/include/gnome-panel-4.0/libpanel-applet/panel-applet.h:172:13: error: ‘GtkActionGroup’ has not been declared
             GtkActionGroup     *action_group);
             ^
/usr/include/gnome-panel-4.0/libpanel-applet/panel-applet.h:175:10: error: ‘GtkActionGroup’ has not been declared

          GtkActionGroup *action_group);