Re: How to use GtkTreeSortable.

[Martyn Russell <ginxd btopenworld com>]

On Tue, 2002-10-22 at 22:13, Martyn Russell wrote:
> On Tue, 2002-10-22 at 14:22, Johan wrote:
> > On Tue, 22 Oct 2002 10:08:34 +0300
> > Olexiy Avramchenko <ath beast stu cn ua> wrote:
> >
> > > As I think there's a file size column in your tree model (of type G_TYPE_INT
> > > or so). All you need is to call gtk_tree_view_column_set_sort_column_id()
> > > on that column.
> > >
> > > enum {
> > > <skipped>
> > >   COLUMN_FILE_SIZE,
> > > <skipped>
> > > };
> > >
> > > <skipped>
> > > {
> > > GtkTreeViewColumn *column;
> > > <skipped>
> > >     column = gtk_tree_view_column_new_with_attributes(...);
> > >     gtk_tree_view_column_set_sort_column_id (column, COLUMN_FILE_SIZE)
> > > <skipped>
> > > }
> > >
> > > Olexiy
> >
> > Hello.
> > I have a file size column of type G_TYPE_STRING and displays the
> > file size like 3.3 MB, 454 Kb, 544 B etc.
> >
> > I am currently using gtk_tree_view_set_sort_column_id, but the sort
> > function sorts the size in alphabetic order, which is incorect
> > for this column.
> >
> > I need to build my own method to sort this column. Do you know
> > how gtk_tree_sortable_set_sort_func() works?
>
> I have a better idea.
> What you do is have 2 columns.  Use the "visible" feature to make a
> column in bytes and make the bytes (which is a GUINT) invisible.  Create
> a second column with the string value and make that visible.  When
> creating the second column sort by the first column.

What was I thinking...? you do not need the "visible" feature, you
simply dont add a column for the GUINT just the STRING and then sort the
STRING column by the GUINT column.  You just have to remember that when
you update the model, you have to update TWO columns.

> Regards,
>
> Martyn
>
> > /Johan
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>
>
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