How to make a status bar icon with wxWidgets on Mac in C++?

I want to create a status bar icon with my C++ application using wxWidgets. Is this possible? I didn't find anything useful regarding this problem. I do not talk about a menu bar but a status bar (icon). Like for example the dropbox app has. Here is a tutorial using Xcode that describes what I want to do but my application uses wxWidgets with C++. I did not include code here because I just need an example how to do it. And here is a post to some python code that looks like it can do this, but I did not find these header files.

Here an example image of what I want to archive: