Caret in ListBox item

I've purchased the HTML Controls pack and it really helped me a lot. Thanks for this great pack. However, one feature would be highly appreciated:

I'm creating a chat application using THTMListBox. Sometimes a user would like to highlight some text in the chat box to copy it. In the current HTMListBox component, this is not possible. It would be highly appreciated if users can point their mouse on part of the text, highlight and copy it.

I know this can be done using a normal Memo control, but i'm using HTML tags and in this case THTMListBox is the best solution for my case.

Thanks