C++ xcb_create_window函数代码示例

static void
_e_alert_create(void)
{
   uint32_t mask, mask_list[4];
   int wx = 0, wy = 0;

   wx = ((sw - WINDOW_WIDTH) / 2);
   wy = ((sh - WINDOW_HEIGHT) / 2);

   font = xcb_generate_id(conn);
   xcb_open_font(conn, font, strlen("fixed"), "fixed");

   /* create main window */
   mask = (XCB_CW_BACK_PIXEL | XCB_CW_BORDER_PIXEL |
           XCB_CW_OVERRIDE_REDIRECT | XCB_CW_EVENT_MASK);
   mask_list[0] = screen->white_pixel;
   mask_list[1] = screen->black_pixel;
   mask_list[2] = 1;
   mask_list[3] = (XCB_EVENT_MASK_KEY_PRESS | XCB_EVENT_MASK_KEY_RELEASE |
                   XCB_EVENT_MASK_EXPOSURE);

   win = xcb_generate_id(conn);
   xcb_create_window(conn, XCB_COPY_FROM_PARENT, win, screen->root,
                     wx, wy, WINDOW_WIDTH, WINDOW_HEIGHT, 0,
                     XCB_WINDOW_CLASS_INPUT_OUTPUT,
                     XCB_COPY_FROM_PARENT, mask, mask_list);

   /* create button 1 */
   mask_list[3] = (XCB_EVENT_MASK_BUTTON_PRESS |
                   XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_EXPOSURE);

   btn1 = xcb_generate_id(conn);
   xcb_create_window(conn, XCB_COPY_FROM_PARENT, btn1, win,
                     -100, -100, 1, 1, 0,
                     XCB_WINDOW_CLASS_INPUT_OUTPUT,
                     XCB_COPY_FROM_PARENT, mask, mask_list);
   xcb_map_window(conn, btn1);

   /* create button 2 */
   btn2 = xcb_generate_id(conn);
   xcb_create_window(conn, XCB_COPY_FROM_PARENT, btn2, win,
                     -100, -100, 1, 1, 0,
                     XCB_WINDOW_CLASS_INPUT_OUTPUT,
                     XCB_COPY_FROM_PARENT, mask, mask_list);
   xcb_map_window(conn, btn2);

   /* create drawing gc */
   mask = (XCB_GC_FOREGROUND | XCB_GC_BACKGROUND | XCB_GC_FONT);
   mask_list[0] = screen->black_pixel;
   mask_list[1] = screen->white_pixel;
   mask_list[2] = font;

   gc = xcb_generate_id(conn);
   xcb_create_gc(conn, gc, win, mask, mask_list);
}

/** Initialize systray information in X.
 */
void
systray_init(void)
{
    xcb_intern_atom_cookie_t atom_systray_q;
    xcb_intern_atom_reply_t *atom_systray_r;
    char *atom_name;
    xcb_screen_t *xscreen = globalconf.screen;

    globalconf.systray.window = xcb_generate_id(globalconf.connection);
    xcb_create_window(globalconf.connection, xscreen->root_depth,
                      globalconf.systray.window,
                      xscreen->root,
                      -1, -1, 1, 1, 0,
                      XCB_COPY_FROM_PARENT, xscreen->root_visual,
                      0, NULL);

    atom_name = xcb_atom_name_by_screen("_NET_SYSTEM_TRAY", globalconf.default_screen);
    if(!atom_name)
        fatal("error getting systray atom name");

    atom_systray_q = xcb_intern_atom_unchecked(globalconf.connection, false,
                                               a_strlen(atom_name), atom_name);

    p_delete(&atom_name);

    atom_systray_r = xcb_intern_atom_reply(globalconf.connection, atom_systray_q, NULL);
    if(!atom_systray_r)
        fatal("error getting systray atom");

    globalconf.systray.atom = atom_systray_r->atom;
    p_delete(&atom_systray_r);
}

void update_root(monitor_t *m, xcb_rectangle_t *rect)
{
	xcb_rectangle_t last_rect = m->rectangle;
	m->rectangle = *rect;
	if (m->root == XCB_NONE) {
		uint32_t values[] = {XCB_EVENT_MASK_ENTER_WINDOW};
		m->root = xcb_generate_id(dpy);
		xcb_create_window(dpy, XCB_COPY_FROM_PARENT, m->root, root,
		                  rect->x, rect->y, rect->width, rect->height, 0,
		                  XCB_WINDOW_CLASS_INPUT_ONLY, XCB_COPY_FROM_PARENT, XCB_CW_EVENT_MASK, values);
		xcb_icccm_set_wm_class(dpy, m->root, sizeof(ROOT_WINDOW_IC), ROOT_WINDOW_IC);
		window_lower(m->root);
		if (focus_follows_pointer) {
			window_show(m->root);
		}
	} else {
		window_move_resize(m->root, rect->x, rect->y, rect->width, rect->height);
		put_status(SBSC_MASK_MONITOR_GEOMETRY, "monitor_geometry 0x%08X %ux%u+%i+%i\n",
		           m->id, rect->width, rect->height, rect->x, rect->y);
	}
	for (desktop_t *d = m->desk_head; d != NULL; d = d->next) {
		for (node_t *n = first_extrema(d->root); n != NULL; n = next_leaf(n, d->root)) {
			if (n->client == NULL) {
				continue;
			}
			adapt_geometry(&last_rect, rect, n);
		}
		arrange(m, d);
	}
}

int main(void)
{

  xcb_connection_t    *conn;
  xcb_screen_t        *screen;
  xcb_window_t         win;
  xcb_gcontext_t       gcontext;
  xcb_generic_event_t *event;
  uint32_t             mask;
  uint32_t             values[2];
  
                        /* open connection with the server */
  conn = xcb_connect(NULL,NULL);
  if (xcb_connection_has_error(conn)) {
    printf("Cannot open display\n");
    exit(1);
  }
                        /* get the first screen */
  screen = xcb_setup_roots_iterator( xcb_get_setup(conn) ).data;
 
                       /* create black graphics gcontext */
  gcontext = xcb_generate_id(conn);
  win = screen->root;
  mask = XCB_GC_FOREGROUND | XCB_GC_GRAPHICS_EXPOSURES;
  values[0] = screen->black_pixel;
  values[1] = 0;
  xcb_create_gc(conn, gcontext, win, mask, values);
 
                       /* create window */
  win = xcb_generate_id(conn);
  mask = XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK;
  values[0] = screen->white_pixel;
  values[1] = XCB_EVENT_MASK_EXPOSURE 
              | XCB_EVENT_MASK_KEY_PRESS
              | XCB_EVENT_MASK_KEY_RELEASE;
  xcb_create_window(conn, screen->root_depth, win, screen->root,
                    10, 10, 100, 100, 1,
                    XCB_WINDOW_CLASS_INPUT_OUTPUT, screen->root_visual,
                    mask, values);
 
                        /* map (show) the window */
  xcb_map_window(conn, win);
 
  xcb_flush(conn);

  cterm_add_event_listener(XCB_KEY_PRESS, output_string);
  cterm_add_event_listener(XCB_KEY_PRESS, close_window);
 
                        /* event loop */
  while (!done) {
    event = xcb_poll_for_event(conn);
    if(event == NULL) continue;
    cterm_handle_event(event);
    free(event);
  }
                        /* close connection to server */
  xcb_disconnect(conn);
  cterm_free_event_handlers();
  return 0;
}

xcb_window_t create_window() {
  // http://www.x.org/releases/current/doc/xproto/x11protocol.html#requests:CreateWindow
  // http://www.x.org/archive/current/doc/man/man3/xcb_create_window.3.xhtml
  //
  // N.B. xcb's order corresponds to the order of the wire.
  // You can look at the protocol encoding: http://www.x.org/releases/current/doc/xproto/x11protocol.html#Encoding::Requests
  
  uint32_t mask;
  uint32_t values[2];
  
  xcb_window_t window;
  xcb_void_cookie_t cookie;
  
  mask = XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK;
  values[0] = screen->white_pixel;
  values[1] = XCB_EVENT_MASK_EXPOSURE | XCB_EVENT_MASK_KEY_PRESS;
  
  window = xcb_generate_id(connection);
  cookie = xcb_create_window(connection,
			     XCB_COPY_FROM_PARENT, window, screen->root,
			     0, 0, 640, 480,
			     0,
			     XCB_WINDOW_CLASS_INPUT_OUTPUT,
			     screen->root_visual,
			     mask, values);
  
  xcb_map_window(connection, window);
  
  return window;
}

void X11WindowedBackend::createWindow()
{
    Xcb::Atom protocolsAtom(QByteArrayLiteral("WM_PROTOCOLS"), false, m_connection);
    Xcb::Atom deleteWindowAtom(QByteArrayLiteral("WM_DELETE_WINDOW"), false, m_connection);
    for (int i = 0; i < initialOutputCount(); ++i) {
        Output o;
        o.window = xcb_generate_id(m_connection);
        uint32_t mask = XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK;
        const uint32_t values[] = {
            m_screen->black_pixel,
            XCB_EVENT_MASK_KEY_PRESS |
            XCB_EVENT_MASK_KEY_RELEASE |
            XCB_EVENT_MASK_BUTTON_PRESS |
            XCB_EVENT_MASK_BUTTON_RELEASE |
            XCB_EVENT_MASK_POINTER_MOTION |
            XCB_EVENT_MASK_ENTER_WINDOW |
            XCB_EVENT_MASK_LEAVE_WINDOW |
            XCB_EVENT_MASK_STRUCTURE_NOTIFY |
            XCB_EVENT_MASK_EXPOSURE
        };
        o.size = initialWindowSize();
        if (!m_windows.isEmpty()) {
            const auto &p = m_windows.last();
            o.internalPosition = QPoint(p.internalPosition.x() + p.size.width(), 0);
        }
        xcb_create_window(m_connection, XCB_COPY_FROM_PARENT, o.window, m_screen->root,
                        0, 0, o.size.width(), o.size.height(),
                        0, XCB_WINDOW_CLASS_INPUT_OUTPUT, XCB_COPY_FROM_PARENT, mask, values);

        o.winInfo = new NETWinInfo(m_connection, o.window, m_screen->root, NET::WMWindowType, NET::Properties2());
        o.winInfo->setWindowType(NET::Normal);
        o.winInfo->setPid(QCoreApplication::applicationPid());
        QIcon windowIcon = QIcon::fromTheme(QStringLiteral("kwin"));
        auto addIcon = [&o, &windowIcon] (const QSize &size) {
            if (windowIcon.actualSize(size) != size) {
                return;
            }
            NETIcon icon;
            icon.data = windowIcon.pixmap(size).toImage().bits();
            icon.size.width = size.width();
            icon.size.height = size.height();
            o.winInfo->setIcon(icon, false);
        };
        addIcon(QSize(16, 16));
        addIcon(QSize(32, 32));
        addIcon(QSize(48, 48));

        xcb_map_window(m_connection, o.window);

        m_protocols = protocolsAtom;
        m_deleteWindowProtocol = deleteWindowAtom;
        xcb_change_property(m_connection, XCB_PROP_MODE_REPLACE, o.window, m_protocols, XCB_ATOM_ATOM, 32, 1, &m_deleteWindowProtocol);

        m_windows << o;
    }

    updateWindowTitle();

    xcb_flush(m_connection);
}

static void
weston_dnd_start(struct weston_wm *wm, xcb_window_t owner)
{
	uint32_t values[1], version = 4;

	wm->dnd_window = xcb_generate_id(wm->conn);
	values[0] =
		XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY |
		XCB_EVENT_MASK_PROPERTY_CHANGE;

	xcb_create_window(wm->conn,
			  XCB_COPY_FROM_PARENT,
			  wm->dnd_window,
			  wm->screen->root,
			  0, 0,
			  8192, 8192,
			  0,
			  XCB_WINDOW_CLASS_INPUT_ONLY,
			  wm->screen->root_visual,
			  XCB_CW_EVENT_MASK, values);
	xcb_change_property(wm->conn,
			    XCB_PROP_MODE_REPLACE,
			    wm->dnd_window,
			    wm->atom.xdnd_aware,
			    XCB_ATOM_ATOM,
			    32, /* format */
			    1, &version);

	xcb_map_window(wm->conn, wm->dnd_window);
	wm->dnd_owner = owner;
}

void XWaylandManager::wmSelection()
{
    m_selRequest.requestor = XCB_NONE;

    quint32 values[1];
    values[0] = XCB_EVENT_MASK_PROPERTY_CHANGE;

    m_selWindow = xcb_generate_id(Xcb::connection());
    xcb_create_window(Xcb::connection(), XCB_COPY_FROM_PARENT,
                      m_selWindow, Xcb::rootWindow(),
                      0, 0, 10, 10, 0, XCB_WINDOW_CLASS_INPUT_OUTPUT,
                      Xcb::rootVisual(),
                      XCB_CW_EVENT_MASK, values);
    xcb_set_selection_owner(Xcb::connection(), m_selWindow,
                            Xcb::resources()->atoms->clipboard_manager,
                            XCB_TIME_CURRENT_TIME);

    quint32 mask =
        XCB_XFIXES_SELECTION_EVENT_MASK_SET_SELECTION_OWNER |
        XCB_XFIXES_SELECTION_EVENT_MASK_SELECTION_WINDOW_DESTROY |
        XCB_XFIXES_SELECTION_EVENT_MASK_SELECTION_CLIENT_CLOSE;
    xcb_xfixes_select_selection_input(Xcb::connection(),
                                      m_selWindow,
                                      Xcb::resources()->atoms->clipboard,
                                      mask);

    //weston_wm_set_selection
}

int main()
{
    /* Open the connection to the X server */
    xcb_connection_t *connection = xcb_connect(NULL, NULL);

    /* Get the first screen */
    const xcb_setup_t  *setup = xcb_get_setup(connection);
    xcb_screen_iterator_t iter = xcb_setup_roots_iterator(setup);
    xcb_screen_t  *screen = iter.data;

    /* Create the window */
    xcb_window_t window = xcb_generate_id(connection);
    xcb_create_window(connection,                 /* Connection */
                      XCB_COPY_FROM_PARENT,      /* depth (same as root) */
                      window,                     /* window Id */
                      screen->root,               /* parent window */
                      0, 0,                       /* x, y */
                      150, 150,                   /* width, height */
                      10,                         /* border_width */
                      XCB_WINDOW_CLASS_INPUT_OUTPUT, /* class */
                      screen->root_visual,        /* visual */
                      0, NULL);                   /* masks, not used yet */

    /* Map the window on the screen */
    xcb_map_window(connection, window);

    /* Make sure commands are sent before we pause so that the window gets shown */
    xcb_flush(connection);

    pause(); /* hold client until Ctrl-C */

    xcb_disconnect(connection);

    return 0;
}

Client *Client::create(const Rect& rect, int screenNumber, const String &clazz, const String &instance, bool movable)
{
    WindowManager *wm = WindowManager::instance();
    xcb_connection_t* conn = wm->connection();
    xcb_screen_t* scr = wm->screens().at(screenNumber);

    xcb_window_t window = xcb_generate_id(conn);
    const uint32_t values[] = {
        scr->black_pixel,
        XCB_GRAVITY_NORTH_WEST,
        XCB_GRAVITY_NORTH_WEST,
        1,
        (XCB_EVENT_MASK_STRUCTURE_NOTIFY
         | XCB_EVENT_MASK_ENTER_WINDOW
         | XCB_EVENT_MASK_LEAVE_WINDOW
         | XCB_EVENT_MASK_EXPOSURE
         | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT
         | XCB_EVENT_MASK_POINTER_MOTION
         | XCB_EVENT_MASK_BUTTON_PRESS
         | XCB_EVENT_MASK_BUTTON_RELEASE)
    };
    warning() << "creating client window" << rect;
    xcb_create_window(conn, XCB_COPY_FROM_PARENT, window, scr->root,
                      rect.x, rect.y, rect.width, rect.height, 0,
                      XCB_COPY_FROM_PARENT, XCB_COPY_FROM_PARENT,
                      XCB_CW_BORDER_PIXEL | XCB_CW_BIT_GRAVITY | XCB_CW_WIN_GRAVITY
                      | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_EVENT_MASK, values);

    xcb_icccm_wm_hints_t wmHints;
    xcb_icccm_wm_hints_set_none(&wmHints);
    xcb_icccm_wm_hints_set_input(&wmHints, 0);
    xcb_icccm_set_wm_hints(conn, window, &wmHints);

    xcb_size_hints_t wmNormalHints;
    memset(&wmNormalHints, 0, sizeof(wmNormalHints));
    xcb_icccm_size_hints_set_position(&wmNormalHints, 1, rect.x, rect.y);
    xcb_icccm_size_hints_set_size(&wmNormalHints, 1, rect.width, rect.height);
    xcb_icccm_set_wm_normal_hints(conn, window, &wmNormalHints);

    String className = clazz + ' ' + instance;
    className[clazz.size()] = '\0';
    xcb_icccm_set_wm_class(conn, window, className.size(), className.constData());
    Client *ptr = new Client(window);
    ptr->mMovable = movable;
    ptr->mRect = rect;
    ptr->mOwned = true;
    ptr->mScreenNumber = screenNumber;
    ptr->init();
    ptr->mNoFocus = true;
    Workspace *ws = wm->activeWorkspace(screenNumber);
    assert(ws);
    ptr->mWorkspace = ws;
    ws->addClient(ptr);

    wm->js().onClient(ptr);
    ptr->complete();

    sClients[window] = ptr;
    return ptr;
}

void ShellXcb::create_window() {
    win_ = xcb_generate_id(c_);

    uint32_t value_mask, value_list[32];
    value_mask = XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK;
    value_list[0] = scr_->black_pixel;
    value_list[1] = XCB_EVENT_MASK_KEY_PRESS | XCB_EVENT_MASK_STRUCTURE_NOTIFY;

    xcb_create_window(c_, XCB_COPY_FROM_PARENT, win_, scr_->root, 0, 0, settings_.initial_width, settings_.initial_height, 0,
                      XCB_WINDOW_CLASS_INPUT_OUTPUT, scr_->root_visual, value_mask, value_list);

    xcb_intern_atom_cookie_t utf8_string_cookie = intern_atom_cookie(c_, "UTF8_STRING");
    xcb_intern_atom_cookie_t _net_wm_name_cookie = intern_atom_cookie(c_, "_NET_WM_NAME");
    xcb_intern_atom_cookie_t wm_protocols_cookie = intern_atom_cookie(c_, "WM_PROTOCOLS");
    xcb_intern_atom_cookie_t wm_delete_window_cookie = intern_atom_cookie(c_, "WM_DELETE_WINDOW");

    // set title
    xcb_atom_t utf8_string = intern_atom(c_, utf8_string_cookie);
    xcb_atom_t _net_wm_name = intern_atom(c_, _net_wm_name_cookie);
    xcb_change_property(c_, XCB_PROP_MODE_REPLACE, win_, _net_wm_name, utf8_string, 8, settings_.name.size(),
                        settings_.name.c_str());

    // advertise WM_DELETE_WINDOW
    wm_protocols_ = intern_atom(c_, wm_protocols_cookie);
    wm_delete_window_ = intern_atom(c_, wm_delete_window_cookie);
    xcb_change_property(c_, XCB_PROP_MODE_REPLACE, win_, wm_protocols_, XCB_ATOM_ATOM, 32, 1, &wm_delete_window_);
}

xcb_window_t open_fullscreen_window(xcb_connection_t *conn, xcb_screen_t *scr, char *color, xcb_pixmap_t pixmap) {
    uint32_t mask = 0;
    uint32_t values[3];
    xcb_window_t win = xcb_generate_id(conn);

    if (pixmap == XCB_NONE) {
        mask |= XCB_CW_BACK_PIXEL;
        values[0] = get_colorpixel(color);
    } else {
        mask |= XCB_CW_BACK_PIXMAP;
        values[0] = pixmap;
    }

    mask |= XCB_CW_OVERRIDE_REDIRECT;
    values[1] = 1;

    mask |= XCB_CW_EVENT_MASK;
    values[2] = XCB_EVENT_MASK_EXPOSURE |
                XCB_EVENT_MASK_KEY_PRESS |
                XCB_EVENT_MASK_KEY_RELEASE |
                XCB_EVENT_MASK_VISIBILITY_CHANGE |
                XCB_EVENT_MASK_STRUCTURE_NOTIFY;

    xcb_create_window(conn,
                      XCB_COPY_FROM_PARENT,
                      win,       /* the window id */
                      scr->root, /* parent == root */
                      0, 0,
                      scr->width_in_pixels,
                      scr->height_in_pixels, /* dimensions */
                      0,                     /* border = 0, we draw our own */
                      XCB_WINDOW_CLASS_INPUT_OUTPUT,
                      XCB_WINDOW_CLASS_COPY_FROM_PARENT, /* copy visual from parent */
                      mask,
                      values);

    char *name = "i3lock";
    xcb_change_property(conn,
                        XCB_PROP_MODE_REPLACE,
                        win,
                        XCB_ATOM_WM_NAME,
                        XCB_ATOM_STRING,
                        8,
                        strlen(name),
                        name);

    /* Map the window (= make it visible) */
    xcb_map_window(conn, win);

    /* Raise window (put it on top) */
    values[0] = XCB_STACK_MODE_ABOVE;
    xcb_configure_window(conn, win, XCB_CONFIG_WINDOW_STACK_MODE, values);

    /* Ensure that the window is created and set up before returning */
    xcb_aux_sync(conn);

    return win;
}

/** Initialize systray information in X.
 * \param phys_screen Physical screen.
 */
void
systray_init(int phys_screen)
{
    xcb_client_message_event_t ev;
    xcb_screen_t *xscreen = xutil_screen_get(globalconf.connection, phys_screen);
    char *atom_name;
    xcb_intern_atom_cookie_t atom_systray_q;
    xcb_intern_atom_reply_t *atom_systray_r;
    xcb_atom_t atom_systray;

    /* Send requests */
    if(!(atom_name = xcb_atom_name_by_screen("_NET_SYSTEM_TRAY", phys_screen)))
    {
        warn("error getting systray atom");
        return;
    }

    atom_systray_q = xcb_intern_atom_unchecked(globalconf.connection, false,
                                               a_strlen(atom_name), atom_name);

    p_delete(&atom_name);

    globalconf.screens[phys_screen].systray.window = xcb_generate_id(globalconf.connection);
    xcb_create_window(globalconf.connection, xscreen->root_depth,
                      globalconf.screens[phys_screen].systray.window,
                      xscreen->root,
                      -1, -1, 1, 1, 0,
                      XCB_COPY_FROM_PARENT, xscreen->root_visual, 0, NULL);

    /* Fill event */
    p_clear(&ev, 1);
    ev.response_type = XCB_CLIENT_MESSAGE;
    ev.window = xscreen->root;
    ev.format = 32;
    ev.type = MANAGER;
    ev.data.data32[0] = XCB_CURRENT_TIME;
    ev.data.data32[2] = globalconf.screens[phys_screen].systray.window;
    ev.data.data32[3] = ev.data.data32[4] = 0;

    if(!(atom_systray_r = xcb_intern_atom_reply(globalconf.connection, atom_systray_q, NULL)))
    {
        warn("error getting systray atom");
        return;
    }

    ev.data.data32[1] = atom_systray = atom_systray_r->atom;

    p_delete(&atom_systray_r);

    xcb_set_selection_owner(globalconf.connection,
                            globalconf.screens[phys_screen].systray.window,
                            atom_systray,
                            XCB_CURRENT_TIME);

    xcb_send_event(globalconf.connection, false, xscreen->root, 0xFFFFFF, (char *) &ev);
}

EGLNativeWindowType QEglFSX11Hooks::createNativeWindow(QPlatformWindow *platformWindow,
                                                       const QSize &size,
                                                       const QSurfaceFormat &format)
{
    Q_UNUSED(format);

    m_platformWindow = platformWindow;

    xcb_screen_iterator_t it = xcb_setup_roots_iterator(xcb_get_setup(m_connection));
    m_window = xcb_generate_id(m_connection);
    xcb_create_window(m_connection, XCB_COPY_FROM_PARENT, m_window, it.data->root,
                      0, 0, size.width(), size.height(), 0,
                      XCB_WINDOW_CLASS_INPUT_OUTPUT, it.data->root_visual,
                      0, 0);

    xcb_map_window(m_connection, m_window);

    xcb_intern_atom_cookie_t cookies[Atoms::N_ATOMS];
    static const char *atomNames[Atoms::N_ATOMS] = {
        "_NET_WM_NAME",
        "UTF8_STRING",
        "WM_PROTOCOLS",
        "WM_DELETE_WINDOW",
        "_NET_WM_STATE",
        "_NET_WM_STATE_FULLSCREEN"
    };

    for (int i = 0; i < Atoms::N_ATOMS; ++i) {
        cookies[i] = xcb_intern_atom(m_connection, false, strlen(atomNames[i]), atomNames[i]);
        xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(m_connection, cookies[i], 0);
        m_atoms[i] = reply->atom;
        free(reply);
    }

    // Set window title
    xcb_change_property(m_connection, XCB_PROP_MODE_REPLACE, m_window,
                        m_atoms[Atoms::_NET_WM_NAME], m_atoms[Atoms::UTF8_STRING], 8, 5, "EGLFS");

    // Enable WM_DELETE_WINDOW
    xcb_change_property(m_connection, XCB_PROP_MODE_REPLACE, m_window,
                        m_atoms[Atoms::WM_PROTOCOLS], XCB_ATOM_ATOM, 32, 1, &m_atoms[Atoms::WM_DELETE_WINDOW]);

    if (qgetenv("EGLFS_X11_FULLSCREEN").toInt()) {
        // Go fullscreen. The QScreen and QWindow size is controlled by EGLFS_X11_SIZE regardless,
        // this is just the native window.
        xcb_change_property(m_connection, XCB_PROP_MODE_REPLACE, m_window,
                            m_atoms[Atoms::_NET_WM_STATE], XCB_ATOM_ATOM, 32, 1, &m_atoms[Atoms::_NET_WM_STATE_FULLSCREEN]);
    }

    xcb_flush(m_connection);

    return m_window;
}

/** Initialize systray information in X.
 * \param phys_screen Physical screen.
 */
void
systray_init(int phys_screen)
{
    xcb_screen_t *xscreen = xutil_screen_get(globalconf.connection, phys_screen);

    globalconf.screens.tab[phys_screen].systray.window = xcb_generate_id(globalconf.connection);
    xcb_create_window(globalconf.connection, xscreen->root_depth,
                      globalconf.screens.tab[phys_screen].systray.window,
                      xscreen->root,
                      -1, -1, 1, 1, 0,
                      XCB_COPY_FROM_PARENT, xscreen->root_visual, 0, NULL);
}