Beginner's question: About dialog

[Peter Robinson t-online de (Peter Robinson)]

Hi guys and gals,

I have recently started to learn GTK and haven't been able to find answers to some simple questions in the 
online docs or by Googling, I hope someone has the patience to bear with me...

I am trying to create an 'about' dialog, but there seems to be some problem with my code. For instance, I 
cannot set the size of the dialog and I cannot get the information such as version name to appear (when I try 
to set the property "version" as in the online docs

http://developer.gnome.org/doc/API/2.0/gtk/GtkAboutDialog.html#gtk-show-about-dialog

the GUI shows the word "version" instead of "0.1". I also get the warning

(bspc:4891): GLib-GObject-WARNING **: IA__g_object_set_valist: object class `GtkAboutDialog' has no property 
named `\x81\xc3Zh\u0001'



I would greatly appreciate it if someone could point me to some example code to help me along my learning 
curve :-}

Thanks a lot Peter

my code (this gets called when the user clicks on the help/about menu):


gint create_about_box (void) {
  GtkWidget *aboutdialog;
        const gchar *title ="BSPC";
        const gchar *version = "0.1";
        const char *website ="http://www.charite.de/ch/medgen/bspc";;

        gint height = 300;
        gint width  = 400;



        aboutdialog = gtk_about_dialog_new();
        gtk_about_dialog_set_name(aboutdialog,title);
        gtk_about_dialog_set_version(aboutdialog,version);
        gtk_about_dialog_set_copyright(aboutdialog,copyright);
        gtk_about_dialog_set_comments(aboutdialog,comments);
        gtk_about_dialog_set_authors (aboutdialog, authors);
        
        gtk_window_set_default_size(aboutdialog,width,height);


        gtk_show_about_dialog (aboutdialog,"version");
  return 1;
}