Re: An image on a TreeView cell

[Iker Perez de Albeniz <ialbeniz cbt es>]

yes I have used your code and declared m_col_image like this:

Gtk::TreeModelColumn< Glib::RefPtr < Gdk::Pixbuf > > m_col_image;

and works perfectly!!!
thanks!


El mi�26-09-2007 a las 09:31 -0500, Jonathon Jongsma escribi� On 9/26/07, Iker Perez de Albeniz <ialbeniz cbt es> wrote:
> > I have copied from the gtkmm documentation an example of a treeview
> > table with a progress-bar.. i haver tried top modify the code to change
> > the progress bar to a image.. like this:
> >
> > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> > row[m_Columns.m_col_image] = "./skin/cerrar.png"; //set the path to the
> > image
> > row[m_Columns.m_col_foo] = false;
> > row[m_Columns.m_col_name] = "Scan3";
> > row[m_Columns.m_col_number] = 1232;
> >
> > //Add the TreeView's view columns:
> > //We use the *_editable convenience methods for most of these,
> > //because the default functionality is enough:
> >
> > //Display a image bar instead of a text:
> > Gtk::Image* cell = new Gtk::Image;
> > int cols_count = m_TreeView.append_column("Tipo", *cell);
> > Gtk::TreeViewColumn* pColumn = m_TreeView.get_column(cols_count - 1);
> >         if(pColumn)
> >         {
> >         #ifdef GLIBMM_PROPERTIES_ENABLED
> >         pColumn->add_attribute(cell->set(), m_Columns.m_col_image);
> >         #else
> >         pColumn->add_attribute(*cell, "value", m_Columns.m_col_image);
> >         #endif
> >         }
> >
> > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> >
> > the biulder crashes in two pints:
> >
> > int cols_count = m_TreeView.append_column("Tipo", *cell); <-- imposible
> > to appned an image
> >
> > pColumn->add_attribute(cell->set(), m_Columns.m_col_image); <--
> > Gtk::Image::set() function not found...
> >
> > any idea abaut how to add an image to an a treview cell...??
> 
> the append_column() function needs to take either a CellRenderer or a
> TreeModelColumn.  You can't just pass it a Gtk::Image.  Make sure you
> read the API documentation:
> http://www.gtkmm.org/docs/gtkmm-2.4/docs/reference/html/classGtk_1_1TreeView.html
> 
> What you probably need to do is define your column m_col_image as type
> Glib::RefPtr<Gdk::Pixbuf> instead of a string specifying the filename.
>  Then your code above would need to be changed to something like
> (NOTE: THIS IS NOT TESTED):
> 
> row[m_Columns.m_col_image] = Gdk::Pixbuf::create_from_file("./skin/cerrar.png");
> int cols_count = m_TreeView.append_column("Tipo", m_Columns.m_col_image);
> 
> That should be all you need.  gtkmm is smart enough to notice that
> your column is of type Gdk::Pixbuf so it creates a CellRendererPixbuf
> for it so that an image is displayed in the treeview.
> 
> Hope that helps