UPDATE: Please refer to CNLohr's video on OpenVR from C instead: https://www.youtube.com/watch?v=r6kM3tR03g4
Get VR working from C with the smallest possible amount of code
This snippet features loading openvr_api.dll using WinAPI's LoadLibrary() function.
I couldn't get anything from ValveSoftware/openvr#133 to work and decided to go an alternative route. The method here does not require patching headers with python scripts or messing with the linker in any way, while also using the most up to date version of the OpenVR dll.
Take openvr_api.dll from steamapps/common/SteamVR/bin/win64/