delphi里面是这么说的 If the Visible properties of a component and all the parents in its parent hierarchy are true, Showing is guaranteed to be true. If one of the parents containing the control has a Visible property value of false, Showing may be either true or false.你看看one of the parents containing 的VISIBLE是否是FALSE
If the Visible properties of a component and all the parents in its parent hierarchy are true, Showing is guaranteed to be true. If one of the parents containing the control has a Visible property value of false, Showing may be either true or false.你看看one of the parents containing 的VISIBLE是否是FALSE