Synopsis

Rust cheatsheet

Fun with strings

Types

String - Rust native owned string type (UTF-8 based) &str - borrowed reference to a String OsString - OS-specific owned string, esp. useful for Linux/Windows APIs OsStr - borrowed reference to OsString PCWSTR - 16bit string, used for Windows API

Conversions

Str -> &str: borrow reference with & PCWSTR -> String: PCWSTR::to_string() PCWSTR -> HSTRING: PCWSTR::to_hstring()

UTF-16 -> PCWSTR: PCWSTR::from_raw()

String -> PCWSTR

We convert the string to a OsString, append a \0 and take its address:

use std::ffi::OsString;
use std::os::windows::ffi::OsStrExt; // for converting between OsString and Windows-native string types

let my_string = "Hello, world!";
let wide_string: Vec<u16> = OsString::from(my_string).encode_wide().chain(Some(0)).collect();
let my_pwcstr: PCWSTR = PCWSTR::from_raw(wide_string.as_ptr());

Construction

literal -> PCWSTR: windows::w! macro