On Mon, 2005-11-21 at 10:54 +0000, Axel Simon wrote:
> On Mon, 2005-11-21 at 21:31 +1100, ashley maher wrote:
> > G'day,
> >
> > I have followed the gtk tree view tutorial at:
> >
> > http://scentric.net/tutorial/.
> >
> > The tutorial is very good. However section: 3.5 deals with Retrieving
> > row data.
> >
> > This works well for data to stdout.
> >
> > However I can't see in the tutorial, nor has google helped, where to
> > find an example where the callback function does not deal with the data
> > directly but passes the data retrieved back to the main programme.
>
> The example shows the "advanced" version of retrieving data, namely by
> using a call back function. There is nothing that prevents you from
> iterating through the model (with a GtkTreeIter) and call
> gtk_tree_model_get directly on the model. That way you have the data
> where you want it: in your main program.
>
> I hope this is what you've asked for,
> Axel.
>
>
>
Thanks Alex,
It did give me a direction. I think you got two different tutorials
confused. I was referring to gtktree tutorial the advanced data
retrieval is in the gtk tutorial.
Specifically I need to return the value of a cell if and only if a row
has been double clicked.
Hence I've persevered with the call-back functions as suggested by the
gtktree-view tutorial.
So it occurred to me that a properly written c_handler should return the
data required. This has proven not so.
Specifically my attempt:
#define STRCPY(x) strcpy(malloc(strlen(x)+1), x)
.........
.........
.........
.........
unsigned char *s1;
.........
.........
.........
.........
g_signal_connect(treeview, "row-activated",
G_CALLBACK(gtree_onSelection), &s1);
return s1;
}
static void
gtree_onSelection (GtkTreeView *treeview, gpointer *data)
{
GtkTreeSelection *sel;
GtkTreeIter selected_row; /* the iter I've been looking
at */
GtkTreeModel *model;
gchar *key;
sel = gtk_tree_view_get_selection(GTK_TREE_VIEW(treeview));
g_assert(gtk_tree_selection_get_mode(sel) == GTK_SELECTION_SINGLE);
/* Check if a row is selected or not */
/* This will only work in SINGLE or BROWSE mode! */
if (gtk_tree_selection_get_selected(sel, &model, &selected_row))
{
gtk_tree_model_get (model, &selected_row, 0, &key, -1);
*data = STRCPY(key);
g_free(key);
}
else
{
printf ("Something\n\n");
}
gtk_main_quit();
}
Just is not getting me anywhere. Hence my question if somebody had a
working example somewhere as I expected it to be a common problem to
solve. I just hadn't come across a working example anywhere.
Of course if I've totally missed the point please feel free to be blunt.
Regards,
Ashley
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