每个请求都可以以已检查或未检查的方式发送。这是通过为每个请求特殊的 cookies 来保证类型安全的。你可以通过调用 send_request/send_request_unchecked 获取请求 cookie。

你可以通过在 cookie 上调用 wait_for_reply/wait_for_reply_unchecked 来检索回复，并将其包装成高级且有意义的 Rust 结构体。对于没有回复的请求（即 Set* 和 Send* 请求），你可以使用 check_request 来检查错误。

示例

获取可用桌面的名称

use xcb;
use xcb_wm::ewmh;

// Create a `rust-xcb` connection
let xcb_con = xcb::Connection::connect(Option::None).unwrap().0;

// Wrap the connection in an `xcb-wm::ewmh` connection for ewmh extensions.
// 
// Note that this does not take ownership of the `rust-xcb` connection
// so you can continue to use other xcb functionality with the same
// connection.
let ewmh_con = ewmh::Connection::connect(&xcb_con);

// Create a request for the _NET_DESKTOP_NAMES property
let request = ewmh::proto::GetDesktopNames;
let cookie = ewmh_con.send_request(&request);

// Get a `GetDesktopNamesReply` reply
//
// Replies are automatically de-serialized into meaningful Rust structs. You
// take full ownership of the reply struct.
let reply = ewmh_con.wait_for_reply(cookie).unwrap();

// All replies implement `Debug` so you can also print them
println!("{:?}", reply);