/// <summary>
/// 重新计算子控件布局,可选择是否强制执行布局
/// </summary>
/// <param name="performLayout">如果强制则为 true, 否则为 false</param>
protected void DoLayoutCore(bool performLayout)
{
if (performLayout || !this.LayoutSuspended)
{
UIControl.DoLayoutInternal(this);
}
}
