DateUtils单元

 

DateUtils单元是新添的日期和时间函数的集合。它包含了用于从TDateTime变量中提取值的新函数或从给

 

定时间间隔中计算值的函数，如:

//pick value

function DayOf(const AValue: TDateTime):Word;

function HourOf(const AValue: TDateTime):Word;

//value in range

function WeekOfYear(const AValue: TDateTime):integer;

function HourOfWeek(const AValue: TDateTime):integer;

function SecondOfHour(const AValue: TDateTime):integer;

 

 

显示操作系统版本信息（注意要用到SysUtils)

ShowMessage ('Running on Windows: ' +

    IntToStr (Win32MajorVersion) + '.' +

    IntToStr (Win32MinorVersion) + ' (Build ' +

    IntToStr (Win32BuildNumber) + ') ' + #10#13 +

    'Update: ' + Win32CSDVersion)