就这么一点？  回复  更多评论
  

积少成多, 聚砂成塔!  回复  更多评论
  

Locks the class factory of the specified control so that dynamically created data associated with the control remains in memory. This can significantly speed up display of the controls. For example, once you create a control in a dialog box and lock the control with AfxOleLockControl, you do not need to create and kill it again every time the dialog is shown or destroyed. If the user opens and closes a dialog box repeatedly, locking your controls can significantly enhance performance. When you are ready to destroy the control, call AfxOleUnlockControl.
根据msdn解释和参数来看，恐怕锁住的不是控件而是控件对应的类厂，仅仅一个clsid不是实例对象，充其量只是决定控件的类型信息。这样好处应该是多次创建带来的，COM组件创建需要类厂。  回复  更多评论