RUST編寫和調用DLL

 

1  執行 cargo new  hellolib --lib 創建庫項目

修改 cargo.toml 

[lib]
name = "myfirst_rust_dll" #生成dll的文件名
crate-type = ["dylib"]

lib.rs

#[no_mangle]
pub extern fn hello_rust(){
    println!("Hello rust dll!");
}

執行：  cargo build --release

生成了myfirst_rust_dll.dll

2、現在准備調用上面的myfirst_rust_dll.dll

執行 cargo new  hello 創建二進制項目

修改 cargo.toml 

[dependencies]
libloading = "0.7"

main.rs

extern crate libloading;

fn call_dynamic() -> Result<u32, Box<dyn std::error::Error>> {
    unsafe {
        let lib = libloading::Library::new("myfirst_rust_dll.dll")?;
        let func: libloading::Symbol<unsafe extern fn() -> u32> = lib.get(b"hello_rust")?;
        Ok(func())
    }
}
fn main() {
    let _a =call_dynamic();

}

將myfirst_rust_dll.dll復制到hello目錄下，在VSCode中調試，將輸出："Hello rust dll!"

或將myfirst_rust_dll.dll復制到debug目錄下，在控制台中運行hello.exe ，也將輸出："Hello rust dll!"

 

 

 

 

參考：https://blog.yasking.org/a/rust-dll-clipboard.html

https://docs.rs/libloading/0.7.0/libloading/

https://blog.csdn.net/wowotuo/article/details/86251732