Thank you for the answer. So basically either I have to rebuild the control or use libvlc?
Yep, or create patch for adding "no-hide-controls" option and try to send it to Videolan team for review (or pay somebody who can do it).
And for the second option and your remark... perhaps because people are familiar with dealing with visible ActiveX controls like the old Windows Media Player control. When I searched Google for "C# VLC" the top StackOverflow page said I could use axvlc.
Yep, it's the easiest solution with many many drawbacks...
If I use the libvlc, probably I have to create the controls myself?
Yep, but then you could use standart WPF/WinForm controls, and do any toolbar with any content with ease.
In ActiveX I had to use only Win32 API... (And yes, that ugly controls is my work...)