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Enabling a horizontal scrollbar in a tlistbox

There is no such property in TListBox. To force a listbox to have horizontal scrollbars, use the message LB_SETHORIZONTALEXTENT. // e.g. in FormCreate(..) begin ListBox1.Width := 300; // listbox can be scrolled by 100 pixels horizontally now: SendMessage (ListBox1.Handle, LB_SETHORIZONTALEXTENT, 400, 0); end;