Delphi检查判断闰年，在日期年份的选择上，直接调用了Windows的日期选择器功能，选择年份和日期挺方便的，个人觉得判断闰年并不怎么常用，倒是时间日期选择功能挺实用。-Delphi examination to determine leap year, the year of the date of selection, direct calls to the date picker feature of Windows, choose the year and date very convenient, personal feel to judge how common is not a leap year, but added the date and time selection function very useful.