Rust: how to resolve target location of a `.lnk` file

rust-resolve-lnk-file.rs

use windows::core::ComInterface;

// https://learn.microsoft.com/en-us/windows/win32/shell/links#resolving-a-shortcut
fn resolve_lnk_target(lnk_file: &str) -> Result<String, Box<dyn std::error::Error>> {
    let psl: windows::Win32::UI::Shell::IShellLinkW = unsafe {
        windows::Win32::System::Com::CoInitialize(None)?;

        windows::Win32::System::Com::CoCreateInstance(
            &windows::Win32::UI::Shell::ShellLink,
            None,
            windows::Win32::System::Com::CLSCTX_INPROC_SERVER,
        )?
    };

    let sz_filename = windows::core::HSTRING::from(lnk_file);
    let ppf = psl.cast::<windows::Win32::System::Com::IPersistFile>()?;
    unsafe {
        ppf.Load(&sz_filename, windows::Win32::System::Com::STGM_READ)?;
        // SLR_NO_UI: Do not display a dialog box if the link cannot be resolved.
        // https://learn.microsoft.com/en-us/windows/win32/api/shobjidl_core/nf-shobjidl_core-ishelllinkw-resolve#slr_no_ui-0x0001
        psl.Resolve(windows::Win32::Foundation::HWND::default(), windows::Win32::UI::Shell::SLR_NO_UI.0 as _)?;
    }

    let mut psz_file = Vec::with_capacity(2048);
    unsafe { psz_file.set_len(psz_file.capacity()); }
    // If you don't need WIN32_FIND_DATAW, pass std::ptr::null_mut() as the parameter.
    // https://microsoft.github.io/windows-docs-rs/doc/windows/Win32/Storage/FileSystem/struct.WIN32_FIND_DATAW.html
    let mut wfd = windows::Win32::Storage::FileSystem::WIN32_FIND_DATAW::default();
    unsafe {
        psl.GetPath(
            psz_file.as_mut_slice(),
            &mut wfd,
            0,
        )?;
    }

    let w_file = windows::core::PCWSTR::from_raw(psz_file.as_ptr());
    let target_file_path = unsafe { w_file.to_string()? };
    Ok(target_file_path)
}

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let links = vec![
        r#"C:\Users\foobar\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\回收站.lnk"#,
        r#"C:\Users\foobar\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\OneDrive.lnk"#,
    ];
    for lnk_file in links {
        let target_file_path = resolve_lnk_target(lnk_file)?;
        println!("{}: {}", lnk_file, target_file_path);
    }

    Ok(())
}

$ ./rust-resolve-lnk-file
C:\Users\foobar\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\回收站.lnk: 
C:\Users\foobar\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\OneDrive.lnk: C:\Users\foobar\AppData\Local\Microsoft\OneDrive\OneDrive.exe