RtlGetVersion

Cargo.toml

[dependencies.windows]
version = "0.51"
features = ["Win32_Foundation", "Win32_System_SystemInformation", "Wdk_System_SystemServices"]

main.rs

use windows::{Wdk::System::SystemServices::*, Win32::System::SystemInformation::*};

fn main() {
    unsafe {
        let mut info = OSVERSIONINFOEXW {
            dwOSVersionInfoSize: std::mem::size_of::<OSVERSIONINFOEXW>() as u32,
            ..Default::default()
        };
        _ = RtlGetVersion(&mut info as *mut _ as *mut _);
        dbg!(info);
    }
}