Re: Scrolling to "top" item in a treeview?

[Bob Caryl <bob fis-cal com>]

Rob Meyers wrote:

> How would I go about scrolling to the top item in a table, where
> the underlying data structure is a treeview?  I want to keep the
> scroll view at the top of the table (items are sorted by relevance),
> and when a new item appears above the current view, I want to scroll
> up.
>
> I've tried using 'scroll_to_row(TreeModel::Path("0")', but sometimes
> this goes to the bottom row instead of the top.
>
> I've also tried looking at the value of get_y() from get_cell_area()
> of the first column in the new path.  In most cases, I get either
> a value of 1, or a negative value, indicating the new row is above
> the scrolled area.  In some cases though, get_y() will return 1, and
> the new row is actually on the bottom, many rows below the scrolled
> view.
>
> Is there a better way to determine the relative position of a new
> row?
>
> Thanks,
>
>  
Assuming your Gtk::TreeView * is "tree" do this:

tree->set_cursor(Gtk::TreeModel::Path("0"));

at the appropriate time.

Bob Caryl