I would like to use c++ to create an application that uses the new macbook pro touch bar. However I am not able to find any really good resources. And apple does not have any docs on using c++ to program the touch bar.
I found this article on c++ and the touch bar, However I cannot find either of the header files for the script GLFW/glfw3.h and GLFW/glfw3native.h. These both seem critical to the script working.
Even if the above article's script works, there are no official docs for programing the touch bar with c++ (That I know of). I think that this is an important thing to have given the fact that many, if not most applications are written in c/c++.
Thank you in advance for the help!
So the article that you link to basically does not need the GLFW/glfw3.h and GLFW/glfw3native.h files if you are not using GLFW.
What UI framework are you using for your C++ app?
Unless it is still using Carbon, at the lowest level, the framework will be creating NSWindows to actually have windows in the UI. You need to get access to the NSWindow that your framework is using to host it the UI. If it is still using Carbon, I think you are probably not going to be able to accomplish this.
If the framework provides some mechanism to get the native platform window (which will be an NSWindow), you would replace the author's call to glfwGetCocoaWindow(window); with the correct call from your framework.
If the framework does not provide access to the NSWindow, then you will need to use the code that is commented out at the bottom of the article to attach your touchbar to the windows in your app.
Please note that all that code is Obj-C code; you'll need to have at least one .m or .mm file in your project to provide that Obj-C glue code to get access to the touchbar. Basically that code is a C-calleable wrapper around the Cocoa API.
Also note that you'll need to expand the list of buttons and actions for all the different things you want to put in the touchbar. You could add your own wrapping API so that the construction of the toolbar is done from C++ and registers actions that call-back into your C++ app to handle the events.
Fundamentally though, the touchbar is not available on any other platform, so there is no great benefit to trying to avoid writing Obj-C to implement your touchbar as that code will only run on macOS anyway. If you use .mm files to implement Obj-C++ for this code, you can still call into your C++ objects from your touchbar code.