这个程序演示了日期选择控件的用途，程序演示了四种不同日期选择的方式。有两种更新日期的方法。vc++,This prg showes the usage of the DateTimePicker Control, it creates 4 different kinds of the control and showes two different ways to retrieve the value

有两个DateTimePicker控件，可以选择起始和终止年份，最终结果以弹窗形式显示， 里面有自己创建类的代码 ，计算闰年个数-There are two DateTimePicker control, you can select the start and end the year, the final results are displayed in pop, which has its own code to create a class, calculate the number