Re: TreeView without a selection when rendered

[Joaquim Schmidlap <schmidlap schmidlap org>]

On Dec 27, 2007, at 10:20 PM, José Alburquerque wrote:

> Joaquim Schmidlap wrote:
> > Whenever I put a TreeView on a window, it appears with the top  
> > row  selected. I would like it to appear initially with no rows  
> > selected,  but still allow the user to make selections later.
> From my experience using a tree view (not a lot, but maybe enough  
> to point some things out), items are not selected automatically.   
> There are methods, such as "set_cursor()" that do modify the  
> selection, but I don't think that anything is automatically  
> selected even after constructing and adding items to a tree view.
>
> > I've tried get_selection()->unselect_all() in both on_realize and   
> > on_show, but it doesn't work. I'm guessing whatever does the  
> > initial  selection happens after those events.
> This should not be necessary if you make sure that there are no  
> calls to TreeView methods such as "set_cursor()" or setting the  
> selection somewhere in you're code.

Agreed. I just ran a test application and set breakpoints on all  
three flavors of TreeView::set_cursor(), but none were entered.

While I was in there, I also set a breakpoint on the selection  
changed signal. The stack trace is very deep and a bit hard to read,  
but it looks like when the TreeView grabs focus, way down in gtk  
there is a call to gtk_tree_view_real_set_cursor(). So it looks like  
an inherent property of the underlying gtk widget itself. My options  
now would appear to be to (1) use the kludge I detailed in my other  
email, or (2) force focus to some other widget.

Thanks for the feedback...

js