No I'm Not. The function that contains the code is connected to the signal from a GTK Button that is on the form.
John On 22/12/06, Paul Davis <[EMAIL PROTECTED]> wrote:
John, You're not by chance accessing these iterators in a TreeSelection::get_selected() callback are you? Paul On 12/22/06, John Blackburn <[EMAIL PROTECTED]> wrote: > Paul, > > Unfortunately not, for two reasons: firstly, the same problem persists where > the iterator becomes invalid and secondly, the Operator ++ is not defined > for column values. Clearly the second problem is minor but the main problem > is a real show stopper. > > I am trying to use the iterators in an STL like way; however, unlike STL > iterators, whenever I try to modify the value of any column, immediately all > iterators are destroyed. > > There must be a way of getting round this or it would have been a real issue > for gtkmm programmers but I havn't seen it yet. > > Thanks for your help > > John > > > On 20/12/06, Paul Davis <[EMAIL PROTECTED]> wrote: > > John, > > > > This doesn't work? > > > > Gtk::TreeModel::Row row = (*iter) ; > > row[m_Columns->m_value]++ ; > > > > Paul > > > > On 12/20/06, johnmb <[EMAIL PROTECTED]> wrote: > > > > > > I am trying to use the following line of code to increment the value of > a > > > column. > > > > > > (*item_iter)[m_Columns->m_value] = > (*item_iter)[m_Columns->m_value] > > > + 1; > > > > > > item_iter is an iter and m_Columns is a set of columns in the > TreeModel. > > > > > > My probelm is that his works on the first occasion and then the iter > becomes > > > invalid. What code do I need to use to make the iter persist ? > > > > > > -- > > > View this message in context: > http://www.nabble.com/TreeModel%3A%3AIterator-invalid-tf2860248.html#a7991457 > > > Sent from the Gtkmm mailing list archive at Nabble.com. > > > > > > _______________________________________________ > > > gtkmm-list mailing list > > > gtkmm-list@gnome.org > > > http://mail.gnome.org/mailman/listinfo/gtkmm-list > > > > > > >
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