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// x11-rs: Rust bindings for X11 libraries
// The X11 libraries are available under the MIT license.
// These bindings are public domain.
#![cfg_attr(not(feature = "xlib"), allow(dead_code))]
#![cfg_attr(not(feature = "xlib"), allow(unused_imports))]
extern crate x11;
use std::ffi::CString;
use std::mem;
use std::os::raw::*;
use std::ptr;
use x11::xlib;
#[cfg(not(feature = "xlib"))]
fn main() {
panic!("this example requires `--features xlib`");
}
#[cfg(feature = "xlib")]
fn main() {
unsafe {
// Open display connection.
let display = xlib::XOpenDisplay(ptr::null());
if display.is_null() {
panic!("XOpenDisplay failed");
}
// Create window.
let screen = xlib::XDefaultScreen(display);
let root = xlib::XRootWindow(display, screen);
let mut attributes: xlib::XSetWindowAttributes = mem::MaybeUninit::uninit().assume_init();
attributes.background_pixel = xlib::XWhitePixel(display, screen);
let window = xlib::XCreateWindow(
display,
root,
0,
0,
400,
300,
0,
0,
xlib::InputOutput as c_uint,
ptr::null_mut(),
xlib::CWBackPixel,
&mut attributes,
);
// Set window title.
let title_str = CString::new("hello-world").unwrap();
xlib::XStoreName(display, window, title_str.as_ptr() as *mut c_char);
// Hook close requests.
let wm_protocols_str = CString::new("WM_PROTOCOLS").unwrap();
let wm_delete_window_str = CString::new("WM_DELETE_WINDOW").unwrap();
let wm_protocols = xlib::XInternAtom(display, wm_protocols_str.as_ptr(), xlib::False);
let wm_delete_window =
xlib::XInternAtom(display, wm_delete_window_str.as_ptr(), xlib::False);
let mut protocols = [wm_delete_window];
xlib::XSetWMProtocols(
display,
window,
protocols.as_mut_ptr(),
protocols.len() as c_int,
);
// Show window.
xlib::XMapWindow(display, window);
// Main loop.
let mut event: xlib::XEvent = mem::MaybeUninit::uninit().assume_init();
loop {
xlib::XNextEvent(display, &mut event);
match event.get_type() {
xlib::ClientMessage => {
let xclient = xlib::XClientMessageEvent::from(event);
if xclient.message_type == wm_protocols && xclient.format == 32 {
let protocol = xclient.data.get_long(0) as xlib::Atom;
if protocol == wm_delete_window {
break;
}
}
}
_ => (),
}
}
// Shut down.
xlib::XCloseDisplay(display);
}
}
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