Re: How to unselect a row in the TreeView, when it is selected secondtime?

["Paul Davis" <pjdavis engineering uiowa edu>]

SaiKamesh,

You're gonna have to track the selection manually.  This will require
you to connect to the signal_button_press.

The basic outline will basically be something like:

//Some necessary values.
Gtk::TreeView* tree_view = ... ;
Glib::RefPtr< Gtk::TreeSelection > selection = .... ;

//Notice the connect_notify() as opposed to connect()
tree_view->signal_button_press_event().connect_notify( ... )

void
on_button_press( GdkEventButton* ev )
{
     Gtk::TreeModel::Path p ;
     Gtk::TreeViewColumn* tvc ;
     int cx ;
     int cy ;

     if( ! tree_view->get_path_at_pos( ( int ) ev->x, ( int ) ev->y,
p, tvc, cx, cy )
    {
        return ;
    }

     if( tree_selection->is_selected( p ) )
    {
        tree_selection->unselect( p ) ;
     }
     else
     {
         tree_selection->select( p ) ;
     }
}

Should be pretty much it unless I'm forgetting something.

Paul

On 4/24/07, SaiKamesh Rathinasabapathy <rsaikamesh gmail com> wrote:
> Hi,
>
> I have added a tree_view( Gtk::TreeView ) in a window.
>
> What I have to do is, if a row is selected at the first time, then it will
> be highlighted. -> Actually we don't need to do anything for this. It will
> automatically be highlighted.
>
> If the same row is clicked (or selected) at the second time, the row should
> be unselected.
>
> if the same row is clicked (or selected) at the third time, then it sholud
> again be highlighted.
>
> I tried to do the above several times. But I could not do it.  Please help
> me out to do this!
>
> Thanks in advance!
>
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