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use graffiti::{App, Window};
fn main() {    let app = unsafe { App::init() };    let mut w = Window::new(&app, "Hello", 400, 300);    assert_eq!(w.resizable(), true);    assert_eq!(w.size(), (400, 300));
    assert_eq!(w.maximized(), false);    w.maximize();    assert_eq!(w.maximized(), true);    w.restore();    assert_eq!(w.maximized(), false);
    assert_eq!(w.minimized(), false);    w.minimize();    assert_eq!(w.minimized(), true);    w.restore();    assert_eq!(w.minimized(), false);
    let mut w2 = Window::new(&app, "...", 400, 300);    w2.set_title("Second window");    w2.set_size((400, 200));
    assert_eq!(w.visible(), true);    w2.hide();    assert_eq!(w2.visible(), false);    w2.show();    assert_eq!(w2.visible(), true);    w2.set_opacity(0.5);    assert_eq!(w2.opacity(), 0.5);
    w.focus();    w2.focus();
    w.minimize();    w.focus();
    while !w.should_close() {        app.wait_events();    }}