$screen = Gnome2::Wnck::Screen->get_default()
$screen->force_update();
$workspace = $screen->get_active_workspace();

##</code><code>##

do {
    $otherWorkspace = $workspace->get_neighbor('WNCK_MOTION_RIGHT');
until (! $otherWorkspace);

##</code><code>##

$workspace->get_width();
$workspace->get_height();

##</code><code>##

$num = $workspace->get_number();
$name = $workspace->get_name();

##</code><code>##

$wnckWin->get_client_window_geometry();
$wnckWin->set_geometry(
    'WNCK_WINDOW_GRAVITY_CURRENT',
        [
            'WNCK_WINDOW_CHANGE_X',       
            'WNCK_WINDOW_CHANGE_Y',
            'WNCK_WINDOW_CHANGE_WIDTH',
            'WNCK_WINDOW_CHANGE_HEIGHT',
        ],
     $x,
     $y,
     $width,
     $height,
);

##</code><code>##

$wnckWin->unminimize(time());
$wnckWin->minimize();
if (wnckWin->is_minimized) {
    ...
}

##</code><code>##

foreach my $gtkWin (Gtk2::Window->list_toplevels()) {
    $wnckWinXid = $wnckWin->get_xid();
    $gtkWinXid = $gtkWin->get_xid();
    if ($wnckWinXid eq $gtkWinXid) {
        ...
    }
}

##</code><code>##

$gdkWin = $gtkWin->get_window();
$winXid = $gdkWin->get_xid();
	
$wnckScreen->force_update();
foreach my $wnckWin ($wnckScreen->get_windows()) {
    my $wnckWinXid = $wnckWin->get_xid();
    if ($wnckWinXid && $wnckWinXid eq $winXid) {
        ...
}

##</code><code>##

$wnckScreen->force_update();
foreach my $wnckWin ($wnckScreen->get_windows()) {	
    if ($wnckWin->get_name() eq 'Notepad') {
        ...
    }
}