+ char* filename = NULL,
+ *path;
+ GdkScreen *screen;
+ const char* relativePath = "doc/user/user_guide/html/index.html";
+ filename = g_build_filename (g_get_current_dir(), relativePath, NULL);
+ path = g_strdup_printf ("ghelp://%s", filename);
+
+ screen = gdk_screen_get_default();
+ gtk_show_uri (screen, path, gtk_get_current_event_time(), NULL);
+
+ g_free(filename);
+ g_free(path);