Delphi Cookbook - Third Edition

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While you are in OnDrawItem, you can do whatever you want with the TListBox Canvas. Moreover, the State parameter (of type TOwnerDrawState) tells you which states the listbox item is in (for example, Selected, Focused, HotTrack, and so on). So, you can use a different kind of drawing, depending on the item state. Check out the Customizing TDBGrid recipe to find out about TDBGrid owner-drawing for an example of the State parameter.

If you want to make your code aware of the selected VCL Style, changing the color used according to the style, you can use StyleServices.GetStyleColor(), StyleServices.GetStyleFontColor(), and StyleServices.GetSystemColor() in the Vcl.Themes unit.

The icons used in this recipe are from the ICOJAM ...