Re: GtkTreeView: how to get the cell with current focus?

[Reuben Rissler <silrep emypeople net>]

I do this all the time in Python with:

    def key_tree_tab(self, treeview, event):
        keyname = Gdk.keyval_name(event.keyval)
        path, col = treeview.get_cursor()
        # only visible columns!!
        columns = [c for c in treeview.get_columns() if c.get_visible()]
        colnum = columns.index(col)
        if keyname=="Tab" :
            if colnum + 1 < len(columns):
                next_column = columns[colnum + 1]
            else:
                tmodel = treeview.get_model()
                titer = tmodel.iter_next(tmodel.get_iter(path))
                if titer is None:
                    titer = tmodel.get_iter_first()
                    path = tmodel.get_path(titer)
                    next_column = columns[0]
             GLib.timeout_add(10, treeview.set_cursor, path, 
next_column, True)


Hope it helps!


On 07/12/2018 01:36 PM, Lars Paulsen wrote:
> Hi All,
>
> I did some further tests and the addresses returned in focus_column 
> are the same as the columns I created with 
> "gtk_tree_view_column_new();". Well, it's quite obvious but somehow I 
> expected that there is some API function which returns an index for a 
> column. Anyway, I will continue by comparing the addresses to find out 
> which column I am in. I need this to find out which column "is next". 
> I want to set the focus to the next cell/column if the user presses tab.
>
> If anyone knows a better solution to determine the column/next column 
> please let me know.
>
> Cheers,
> Lars
>
>
> Am 12.07.2018 um 18:11 schrieb Lars Paulsen:
> > Hello All,
> >
> > I got a little problem with a GtkTreeView and with getting the cell 
> > which actually has got the focus:
> >
> > From the API documentation it seems like
> >
> > gtk_tree_view_get_cursor(GTK_TREE_VIEW(tree), &path, &focus_column);
> >
> > is doing the job. I can handle the path, it gives me the row which 
> > has the focus. But how do I get the index of the cell from 
> > focus_column (alias GtkTreeViewColumn)? A web search revealed some 
> > old forum entries which seem to state that it is not supported.
> >
> > Do I have to check the column name or compare the addresses of my 
> > columns?
> >
> > Thanks for any help in advance.
> >
> > Best Regards,
> > Lars
>
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