Componet of VideoLan (Install)

[ProgMaq]

Hello! Im Spanish, so sorry my bad english.
I'm building a application in delphi 7 personal, and i need a TreeView with CheckBoxs. In VideoLan instalation is that component!

What is it name?
Where can I download?
Is it Free?

Very Thanks!
Manuel.

Example of the component:
http://www.peer2mail.com/images/segmanager.gif

[Rémi Denis-Courmont]

VLC uses the wxWidgets library for all GUI components on Windows/Linux.
See http://www.wxwidgets.org/

Note that the GUI is developped in C++, not in Delphi though.