Re: How to use GtkTreeSortable.

[Martyn Russell <ginxd btopenworld com>]

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.

Regards,

Martyn

> /Johan
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