// X11 Fullscreen window
// !! Netestovany kod !!
// Moznost 1, fullscreen na vybrane monitory

XClientMessageEvent msg = {
    .type = ClientMessage,
    .display = xdisplay_ptr,
    .window = window_xid,
    .message_type = XInternAtom(xdisplay_ptr, "_NET_WM_FULLSCREEN_MONITORS", True), // osetrit, jestli vrati None => neni podporovano
    .format = 32,
    .data = { .l = { topMonitor, bottomMonitor, leftMonitor, rightMonitor, 1 /* source, 0 = not specified, 1 = normal application, 2 = user interaction */ } }
};

XSendEvent(xdisplay_ptr, root_window_xid, False, SubstructureRedirectMask | SubstructureNotifyMask, (XEvent*)&msg);

// Moznost 2, fullscreen a nechat WM rozhodnout, na ktere monitory

XClientMessageEvent msg = {
    .type = ClientMessage,
    .display = xdisplay_ptr,
    .window = window_xid,
    .message_type = XInternAtom(xdisplay_ptr, "_NET_WM_STATE", True), // osetrit, jestli vrati None => neni podporovano
    .format = 32,
    .data = { .l = {
        1 /* _NET_WM_STATE_ADD */,
        XInternAtom(xdisplay_ptr, "_NET_WM_STATE_FULLSCREEN", True) /* first property to add */,
        None /* second property to add */,
        0,
        1 /* source, jako u moznosti 1 */
    }}
};

XSendEvent(xdisplay_ptr, root_window_xid, False, SubstructureRedirectMask | SubstructureNotifyMask, (XEvent*)&msg);