private void WriteAllInvWindows()
{
writer.Write(GUIInvWindows.Count);
foreach (GUIInventory invWindow in GUIInvWindows)
{
WriteGUIControl(invWindow, 0);
writer.Write(invWindow.CharacterID);
writer.Write(invWindow.ItemWidth);
writer.Write(invWindow.ItemHeight);
writer.Write(0); // topIndex
}
}