static Backend *back;
static void *backhandle;

static struct unicode_data ucsdata;
static int session_closed;

static const struct telnet_special *specials;
static int specials_menu_position;

static struct {
    HMENU menu;
    int specials_submenu_pos;
} popup_menus[2];
enum { SYSMENU, CTXMENU };

{
    return icon ? icon_name : window_name;
}

/*
 * See if we're in full-screen mode.
 */
int is_full_screen()
static int is_full_screen()
{
    if (!IsZoomed(hwnd))
	return FALSE;
    if (GetWindowLong(hwnd, GWL_STYLE) & WS_CAPTION)
	return FALSE;
    return TRUE;
}

}


/*
 * Go full-screen. This should only be called when we are already
 * maximised.
 */
void make_full_screen()
static void make_full_screen()
{
    DWORD style;
	RECT ss;

    assert(IsZoomed(hwnd));

	if (is_full_screen())

    CheckMenuItem(GetSystemMenu(hwnd, FALSE), IDM_FULLSCREEN,
		  MF_CHECKED);
}

/*
 * Clear the full-screen attributes.
 */
void clear_full_screen()
static void clear_full_screen()
{
    DWORD oldstyle, style;

    /* Reinstate the window furniture. */
    style = oldstyle = GetWindowLong(hwnd, GWL_STYLE);
    style |= WS_CAPTION | WS_BORDER;
    if (cfg.resize_action == RESIZE_DISABLED)

    CheckMenuItem(GetSystemMenu(hwnd, FALSE), IDM_FULLSCREEN,
		  MF_UNCHECKED);
}

/*
 * Toggle full-screen mode.
 */
void flip_full_screen()
static void flip_full_screen()
{
    if (is_full_screen()) {
	ShowWindow(hwnd, SW_RESTORE);
    } else if (IsZoomed(hwnd)) {
	make_full_screen();
    } else {
	SendMessage(hwnd, WM_FULLSCR_ON_MAX, 0, 0);