Re: Gtk::TreeView cell background color

[luca <luca cappa i-medlab com>]

Hello,

Jason Burchfield wrote:

> When I add a Gtk::TreeModelColumn<bool>, which uses a 
> Gtk::CellRendererToggle, to a Gtk::TreeView and try to change the cell 
> color I get a seg fault.
> Is this a bug or am I doing something wrong.  All other columns work...
>
>
> tv->append_column_editable( "Test", Columns.m_col_test );
>
>
> void ColorRows( Gtk::TreeView* treeview ){
>
>    Gtk::CellRendererText* cell_renderer_text;
>    Gtk::TreeViewColumn* color_column;
>    vector<Gtk::TreeViewColumn*> columns = treeview->get_columns();
>    Gtk::TreeModel::Children children = treeview->get_model()->children();
>    Gtk::TreeModel::Row row;
>    CModelColumns ModelColumns;
>      for( int x = 0; x < children.size(); x++ ){
>          row = *(children[x]);
>              if( (x % 2) == 0 )                      
> row[ModelColumns.m_col_color] = "grey";
>                  else
>            row[ModelColumns.m_col_color] = "white";
>              for( int y = 0; y < columns.size(); y++ ){
>                      color_column = treeview->get_column(y);
>            Gtk::CellRenderer* cell_renderer = 
> color_column->get_first_cell_renderer();
>                              cell_renderer_text =
>                        
> dynamic_cast<Gtk::CellRendererText*>(cell_renderer);

Here the dyn_cast will return 0, since the CellRendererToggle is not 
related to CellRedererText in any way. I guess that you have simply to 
replace CellRendererText with CellRendererToggle for the definition of 
cell_renderer_text and in the dyn_cast too.

Greetings,
Luca