// tree item right-clicked
void OpenFilesListPlugin::OnTreeItemRightClick(wxTreeEvent& event)
{
    if (Manager::IsAppShuttingDown())
        return;

    EditorBase* ed = static_cast<EditorBase*>( static_cast<OpenFilesListData*>(m_pTree->GetItemData(event.GetItem()))->GetEditor() );
    if (ed)
    {
        wxPoint pt = m_pTree->ClientToScreen(event.GetPoint());
        ed->DisplayContextMenu(pt,mtOpenFilesList);
    }
}