How to implement the hover effect with multiple selection mode in a TreeView

["Dos Santos, Oliveira" <dossantos ebu ch>]

Hi everybody,

 

Basically, How to properly implement the set_hover_selection(true) from the Gtk::TreeView Class with the set_mode(Gtk::SELECTION_MULTIPLE) from the Gtk::TreeSelection class ???

 

When I implement only the hover effect, it works fine and I have the expected effect on each row.

set_hover_selection(true); // works fine

 

When I implement only the multiple selection mode, it works fine and I can select several rows of my Gtk::TreeView at the same time.

m_TreeViewSelection = get_selection();

m_TreeViewSelection->set_mode(Gtk::SELECTION_MULTIPLE); // works fine

 

When I try to implement the both, only the multiple selection mode stays functional and the hover effect seems disable.

set_hover_selection(true); // seems to be disable

m_TreeViewSelection = get_selection();

m_TreeViewSelection->set_mode(Gtk::SELECTION_MULTIPLE); // works fine

 

My source code compiles without problem or warnings. When I launch my application, all works fine; During operation, I have neither warning or neither crashes and all seems to be fine except the hover effect which doesn’t work.

 

If it’s a bug which needs to be fixed, can I activate my hover effect with multiple selection if I connect the Glib::SignalProxy0<void> Gtk::TreeView::signal_cursor_changed(void) signal ???

 

Regards

 

Marco Dos Santos Oliveira

EBU/European Broadcasting Union

Technology and Innovation Department

 

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