QM toolbars: how to drag and drop a button

[_pi]

hello gintaras, it has been a while since i last edited the related code for that.
i now want to use a toolbar like this for overlaying a text field, which does not allow drag text.
that all is working, but since i am so rusty with qm code, can you please give me a hint or a topic about how to extract urls from dropped text?

thank you!