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// Copyright 2021, Igor Shaula
// Licensed under the MIT License <LICENSE or
// may not be copied, modified, or distributed
// except according to those terms.
extern crate winreg;
use std::io;
use winreg::enums::*;
use winreg::RegKey;
fn main() -> io::Result<()> {
{
// put this in a block so app_key_1 gets out of scope and doesn't prevent us
// from loading the key again later
let app_key_1 = RegKey::load_app_key("myhive.dat", true)?;
app_key_1.set_value("answer", &42u32)?;
}
let answer: u32 = {
// NOTE: on Windows 7 this fails with ERROR_ALREADY_EXISTS
let app_key_2 =
RegKey::load_app_key_with_flags("myhive.dat", KEY_READ, REG_PROCESS_APPKEY)?;
app_key_2.get_value("answer")?
};
println!("The Answer is {}", answer);
Ok(())
}