1、很多朋友都问过怎样防止 MDI 子窗口在最大化（或最小化）过程中如何避免闪烁，就是像 Excel 一样，子窗口不产生动画效果，不过一直都没有很好的解决办法，如果您喜欢用 LockWindowUpdate 之类的就别往下看了。

2、原理极其简单，就是用 SystemParametersInfo 函数实现开、关系统的动画效果。

3、我把这种 MDI 子窗口写成了一个类，大家用的时候只要把 class(TForm) 中的 “TForm” 换成 “TQuietMDIChildForm”就行了，其他什么都跟平常一样。非 MDI 子窗口也可以这样继承，不过 Delphi 中万恶的 Application 会在里面捣乱。-1, many friends have asked how to prevent the MDI window son maximize (or minimize) the process of how to avoid flicker, Excel is the same as the son does not have a window animation effects, but have not been very good solution, If you like to use LockWindowUpdate like reading down on the other. 2, the principle is very simple and that is SystemParametersInfo Function set, The system of animation. 3, I call this an MDI window-written by a class, we will take as long as the class (TForm) "TForm" into the "TQuietM DIChildForm "OK, what other told usual. For non- MDI window can also be inherited, But Delphi heinous Application will make trouble inside.