,m_content_changed(false), m_top(0), m_selected(0), m_itemheight(25)
,m_items_per_page(0), m_selection_enabled(1), m_scrollbar(NULL)
{
,m_content_changed(false), m_top(0), m_selected(0), m_itemheight(25)
,m_items_per_page(0), m_selection_enabled(1), m_scrollbar(NULL)
{