Delphi限制窗口大小不能被拉大，这个我觉得还是挺实用的，比较综合的Delphi项目中或许会用到。本例所演示的效果中，窗口被限制为400*250，即使再次拉大窗口后，窗口也不会变大，只能在长度：400、宽度250的范围内变小，不能被放大。-Delphi restrict the window size cannot be pulled high, I think this is very practical, comprehensive Delphi project may be used. This example demonstrates the effect, the window is limited to 400*250, even pull the window again, the window will not change, only in length, width: 400 in 250 of the smaller, can not be enlarged.