On Tue, Sep 29, 2009 at 09:16:24 +0200, JM wrote:
> I need some help with the binding for TreeViewRowSeparatorFunc.
> Something is wrong here.
> If I use
>
> this.set_row_separator_func(separator_func, null, destrnot);
I think there are two parameters too many.
It looks like a problem in the .vapi -- since C signature is
void gtk_tree_view_set_row_separator_func(
GtkTreeView *tree_view,
GtkTreeViewRowSeparatorFunc func,
gpointer data,
GDestroyNotify destroy);
The corresponding Vala signature should be:
class TreeView { ...
void set_row_separator_func(owned Gtk.TreeViewRowSeparatorFunc func);
... }
But it's not. File a bug. Thanks.
^^^^^^^^^^^
By the way, the binding for get_row_separator_func won't work either and
should probably just be removed, because it seems unfixable (it returns just
the function pointer, which is not enough to reconstruct a closure).
> in my TreeView widget together with
>
> public static void destrnot() {
> return; //just for testing
> }
>
> private bool separator_func(Gtk.TreeModel model, Gtk.TreeIter iter) {
> print("in TreeViewRowSeparatorFunc\n");
> return false; //just for testing
> }
>
> I get the following ccode:
>
> gtk_tree_view_set_row_separator_func (
> (GtkTreeView*) self,
> _xnoise_media_browser_separator_func_gtk_tree_view_row_separator_func,
> self,
> NULL,
> _xnoise_media_browser_destrnot_gdestroy_notify);
>
> The vapi file says:
>
> public void set_search_position_func (Gtk.TreeViewSearchPositionFunc
> func,
> void* data,
> GLib.DestroyNotify destroy);
>
> I'm not sure how vala handles void* but obviously in the ccode there is
> one too many 'self'.
No, the self is fine. The problem is not in void *, which is handled just
fine. The problem is, that a non-static delegate argument consists of the
function pointer, the taget (user data) pointer and, if modified with
'owned', the destroy notify pointer.
Remember that the separator_func is an /instance/ method? So the instance
must be passed in somehow -- that's why the 'self' is there. And since vala
is supposed to take care of memory management for you, it will also pass
correct unref function if the delegate is owned.
> Can anybody give me a hint how to correct the vapi?
See above.
--
Jan 'Bulb' Hudec <[email protected]>
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