rust include_bytes宏示例，加载DLL到EXE中，使用时解压出来调用，调用DLL并将DLL返回的信息复制到粘贴板

get_x3id.rs

extern crate clipboard;
use clipboard::ClipboardProvider;
use clipboard::ClipboardContext;

extern crate libloading;
use libloading::{Library, Symbol};

use std::io::prelude::*;
use std::path::Path;
use std::ffi::CStr;
use std::fs::File;
use std::str;
use std::io;


type GetHylinkDeviceId = unsafe fn() -> *const i8;

const LIBRARY_PATH: &'static str = "PcInfo.dll";
const HYLINK_DLL: &'static [u8] = include_bytes!("PcInfo.dll");


fn generate_hylink_dll(filename: &str, buf: &[u8]) -> io::Result<()> {

    let mut f = try!(File::create(filename));
    try!(f.write(&buf));
    Ok(())

}

fn copy_to_clipboard(x3id: String) {

    let mut ctx: ClipboardContext = ClipboardProvider::new().unwrap();
    println!("{:?}", ctx.get_contents());
    ctx.set_contents(x3id).unwrap();

}

fn get_x3id() -> String {

    // 如果不存在DLL文件，生成DLL
    if !Path::new(LIBRARY_PATH).exists() {
        match generate_hylink_dll(LIBRARY_PATH, HYLINK_DLL) {
            Ok(s) => println!("Generate hylink dll file success {:?}", s),
            Err(r) => println!("Generate hylink dll file failed {:?}", r),
        }
    }

    // 从本地加载DLL文件
    let lib = Library::new(LIBRARY_PATH).unwrap();
    println!("{:?}", lib);

    // 调用DLL获取标识码
    let x3id = unsafe {
 
        let func: Symbol<GetHylinkDeviceId> = lib.get(b"GetHylinkDeviceId").unwrap();
 
        let c_buf: *const i8 = func();
        let c_str: &CStr = CStr::from_ptr(c_buf);
        let str_slice: &str = c_str.to_str().unwrap();
        let str_buf: String = str_slice.to_owned();
        str_buf

    };
    x3id
}

fn main() {

    // 从DLL中获取X3标识码
    let x3id: String = get_x3id();
    println!("{:?}", x3id);

    // 将标识码复制到粘贴板
    copy_to_clipboard(x3id)

}