nanogui | Minimalistic C++/Python GUI library for OpenGL GLES2/3 | Binary Executable Format library

I am currently trying to get NanoGUI into my opengl project. I use GLFW and GLAD.

My issue is I can't find any documentation on how this works, I have cloned the NanoGUI Git repo, I have run cmake (not that I have any idea how to use cmake!) and I have a folder that contains a new VS solution. But what now? How do I get this into my project?

Here is the folder after the cmake.

But now what do I do with this? Any library I have used before I just set up paths to .lib and include files and set up the linker?

The look and feel of nanogui is very appealing, and it looks like a well designed ui toolset. Is it possible to use it inside an existing project, that does not use GLFW? I had a quick look at the source, and there are some GLFW dependencies indeed, like e.g. (button.cpp)

I'm trying to add a dynamic number of sliders to a GUI window, and update an std::vector with the values according to how each slider changes. The GUI library uses callbacks and I can successfully do it for one slider (or when copy&pasting the slider code 20 times but that's not a solution), however I'm having problems factoring the slider creation into a function: There are issues with variable lifetime in how to tell each slider which element in the vector it should update.

I'm using nanogui (or libigl specifically, which uses nanogui) but I think the problem is actually quite generic and should apply to other GUI frameworks or situations as well.

Here's a short version of the code of how to add one slider and it updates my_values[0] (note I had to put "0" manually):