Scroll windows does use all of the content area

[Richard Gipps <rgipps netspace net au>]

I am currently updating an application I had written for GTK+2 to work 
with GTK+3. This work is being done on Windows XP with GTK version 3.2.1.

Previously, the following code produced a scrollable window which took 
up the whole "action area" of the dialogue box

  License_wnd = gtk_dialog_new_with_buttons("License",
                                             NULL,
                                             GTK_DIALOG_MODAL,
                                             GTK_STOCK_OK,
                                             GTK_RESPONSE_NONE,
                                             NULL);
  gtk_widget_set_size_request(License_wnd,640,420);
  gtk_window_set_resizable(GTK_WINDOW(License_wnd),FALSE);
  gtk_window_set_position(GTK_WINDOW(License_wnd),GTK_WIN_POS_CENTER);

  License_wnd_scroll = gtk_scrolled_window_new(NULL,NULL);
  
gtk_container_add(GTK_CONTAINER(GTK_DIALOG(License_wnd)->vbox),License_wnd_scroll);

I have changed the code to use the new content area concept (see below) 
and now the height of the scroll windows no longer takes up the whole 
"action area" of the dialogue box.

License_wnd = gtk_dialog_new_with_buttons("License",
                                             NULL,
                                             GTK_DIALOG_MODAL,
                                             GTK_STOCK_OK,
                                             GTK_RESPONSE_NONE,
                                             NULL);
  gtk_widget_set_size_request(License_wnd,640,420);
  gtk_window_set_resizable(GTK_WINDOW(License_wnd),FALSE);
  gtk_window_set_position(GTK_WINDOW(License_wnd),GTK_WIN_POS_CENTER);

  License_wnd_scroll = gtk_scrolled_window_new(NULL,NULL);
  content_area = gtk_dialog_get_content_area(GTK_DIALOG(License_wnd));
  gtk_container_add(GTK_CONTAINER(content_area),License_wnd_scroll);

Should I be setting an additonal property now to make the scroll window 
fill up the "action area"?

Richard.