Re: gtkmm affected by recent changes to gtk (GdkNativeWindow, gtk_toolbar_[gs]et_tooltips)

[Armin Burgmeier <armin arbur net>]

On Thu, 2008-09-18 at 17:20 -0400, Damon Register wrote:
> Armin Burgmeier wrote:
> > gtkmm is ABI stable, which means that it must be possible to compile a
> > program against gtkmm 2.12 and run it with gtkmm 2.14. So if we change
> > the signature of a function to have different parameters, then the
> > function will not be found anymore by a program linked against the older
> > version, and it will refuse to run.
> Now I understand more clearly.  Thanks for explaining that.  Perhaps
> overloading is a better solution?  What is the best way to handle the
> gtk problem?  I could put ifdefs into the gtkmm Toolbar::get_tooltips_object()
> to handle this gtktoolbar.h problem
> 
> struct _GtkToolbar
> {
> 
> #ifndef GTK_DISABLE_DEPRECATED
>    GtkTooltips     *GSEAL (tooltips);
> #else
>    gpointer         GSEAL (_tooltips);
> #endif
> 
> };
> 
> but wouldn't that be bad to have gtk defs mixed in with the gtkmm or is
> that normal?  I can understand why someone might want to change a data
> type but why the member name?  Is that for program readability, so it
> is easier to tell which type is being used?  Wouldn't it make more
> sense to have a typedef in gtk for tooltips so then it just uses the
> typedef?  Perhaps like this?
> 
> #ifndef GTK_DISABLE_DEPRECATED
>    typedef GtkTooltips* GtkTooltips_type;
> #else
>    typedef gpointer GtkTooltips_type;
> #endif
> 
> 
> struct _GtkToolbar
> {
>    GtkTooltips_type  GSEAL (tooltips);
> };
> 
> 
> Looking at my own idea, I am not sure if this would have that binary
> backward compatibility problem you mentioned :-(
> What do you think?

Again, this problem has been fixed already in recent gtkmm versions. The
Toolbar::get_tooltips_object returns simply 0 now. See
http://svn.gnome.org/viewvc/gtkmm/trunk/gtk/src/toolbar.ccg?view=markup.

The simplest thing for you to do would probably be to use a recent
enough gtkmm tarball, from
http://ftp.gnome.org/pub/GNOME/sources/gtkmm/2.13/. 

> Damon Register

Armin