Question about put "GtkWidget" pointer as function's argument

["chao yeaj" <yeajchao gmail com>]

Hello everyone

     My code like this:


       int
        create_image_from_file(GtkWidget *splash)
       {
                  GtkWidget image = NULL;
                 GtkWidget  frame = NULL;

                  image = gtk_image_new_from_file("~/splash.png");
                  frame = gtk_frame_new("image");
                  gtk_container_add(GTK_CONTAINER(frame),image);

                 splash = frame;    /*  Here, the splash is not NULL*/
                 return 0;;
        }


        int
        other_function()
        {
                GtkWidget *splash = NULL;

                create_image_from_file(splash);

                  /*  Here, the splash  is still  NULL, Why ?*/
                 /*  Here, the splash  is still  NULL, Why ?*/
      }

       I do not know why   the splash pointer in the "other_function"
is still NULL,i need your help ?

Any comments would be much appreciated,and thanks in advance !