To enable marquee with the animated effect (auto-scrolling forward and backward on the focused item) in the ListBox, you need to add the following code.
Column cell listbox (for example CAknSingleStyleListBox):
iListBox->ItemDrawer()->ColumnData()->SetMarqueeParams (3, 20, 1000000, 200000);
iListBox->ItemDrawer()->ColumnData()->EnableMarqueeL(ETrue);
Formatted cell listbox (for example CAknDoubleStyleListBox):
iListBox->ItemDrawer()->FormattedCellData()->SetMarqueeParams(3, 20, 1000000, 200000);
iListBox->ItemDrawer()->FormattedCellData()->EnableMarqueeL(ETrue);