本例子功能是用VC++6.0实现的计算两个日期的时间差值的。在此只实现了计算两个日期的小时差，其它的分钟，秒，天数等类似可以实现。-This example function is implemented using VC++6.0 calculate the time difference between the two dates. This is only achieved two dates to calculate the hour difference, other minutes,