RE: [gtkmm] TreeView::get_column_cell_renderer

[Peter Gasper <pgasper designadvantage com>]

My apologies. The documentation said to use a dynamic cast and I had
never heard of such a thing before, nor seen any example anywhere on how
to do it; this seemed to be as good a place as any to ask. I will be
more careful in the future. 

thanks.

On Thu, 2003-07-10 at 00:53, Murray Cumming Comneon com wrote:
> Murray Cumming
> murrayc usa net
> www.murrayc.com
> 
> > -----Original Message-----
> > From: Peter Gasper [mailto:pgasper designadvantage com] 
> > Sent: Mittwoch, 9. Juli 2003 17:50
> > To: gtkmm-list gnome org
> > Subject: [gtkmm] TreeView::get_column_cell_renderer
> > 
> > 
> > I want to modify the properties of a cell renderer. I can use the
> > following function to get the cell renderer for a column. But I am not
> > sure how to do the syntax for the dynamic cast descriped below:
> > 
> > CellRenderer* Gtk::TreeView::get_column_cell_renderer 
> > (
> > int 
> >   n
> > ) 
> > 
> > 
> >  
> > Gets the CellRenderer for that
> > column.
> > 
> > You should dynamic_cast<> to the
> > expected derived CellRenderer type.
> > This assumes that the TreeViewColumn
> > contains only one CellRenderer. 
> > 
> > 
> > If I try the following it complains because get_column_cell_renderer
> > returns a CellRenderer and not a CellRendererToggle:
> > 
> > 	Gtk::CellRendererToggle *cell=get_column_cell_renderer(column);
> 
> It would be nice if you asked pure C++ questions somewhere more appropriate.
> 
> Gtk::CellRendererToggle* cell = dynamic_cast<Gtk::CellRendererToggle*>(
> get_column_cell_renderer(column) );
> 
> > 	cell->set_radio(true);
> > 
> > thanks.
> > 
> > -- 
> > Peter Gasper <pgasper designadvantage com>
> > 
> > _______________________________________________
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> > gtkmm-list gnome org
> > http://mail.gnome.org/mailman/listinfo/gtkmm-list
> > 
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-- 
Peter Gasper <pgasper designadvantage com>