/// <summary>
/// 插入子窗口
/// </summary>
/// <param name="window"></param>
private void InsertWindow(SubWindow window)
{
window.AddCloseEventListener(this.m_OnSubWindowClose);
if (this.m_Root == null)
{
this.m_Root = new SubWindowNode(true, 0);
}
this.m_Root.AddWindow(window, 0);
}