Hyper-V API for getting the VM, Counter and VmProcessor pro grammatically using c++

I have an old program where I have been using Power Shell commands like Gt-VM, Get-Counter, Get-VMProcessor. These PS commands are archaic and very slow and I want to move to Hyper-V API's. Could someone kindly point me to an sample program(s) which would give me an idea as to how to get the same job done using Hyper-V API's

thanks a lot in advance.