Re: GTK3 porting problem (clipboard)

[Allin Cottrell <cottrell wfu edu>]

On Fri, 11 Mar 2011, [windows-1252] Jaroslav ^Jmïd wrote:

>  From GTK documentation:
>
> ---
> A GtkTargetList structure is a reference counted list of GtkTargetPair.
> It is used to represent the same information as a table of
> GtkTargetEntry, but in an efficient form. This structure should be
> treated as opaque.
> ---
>
> Important to read is "This structure should be treated as opaque".
> You shouldn't access members of this structure directly. In GTK2,
> structure definition was available in GTK headers, in GTK3, it is not.
>
> Info:
> http://library.gnome.org/devel/gtk3/stable/gtk3-Selections.html#GtkTargetList-struct

You're right, but this seems odd. In the GTK3 version of the
documentation the basic structures GtkTargetEntry and
GtkTargetPair are still exposed in the API, and although
GtkTargetList is said to be opaque (a) it's unclear why this
should be so (it seems to be a trivial composite) and (b) the
functionality that was previously available via the struct itself
is not replicated via accessor functions. For example, there's no

 gtk_target_list_get_n_targets()

to replace the original poster's GTK2 idiom:

 int nTargetCnt = g_list_length (list->list);

Allin Cottrell