// the item will be shown in bold
void SetItemBold(const wxTreeItemId& item, bool bold = true);
-#ifdef __WXMSW__
// the item will be shown with a drop highlight
void SetItemDropHighlight(const wxTreeItemId& item, bool highlight = true);
-#endif
// set the items text colour
void SetItemTextColour(const wxTreeItemId& item, const wxColour& col);