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  • DateOf、TimeOf、YearOf、MonthOf、WeekOf、DayOf、HourOf、MinuteOf、SecondOf、MilliSecondOf 提取时间成分

    它们的参数都是一个 TDateTime,
    DateOf、TimeOf 分别提取日期与时间, 并返回 TDateTime 类型;
    YearOf、MonthOf、WeekOf、DayOf、HourOf、MinuteOf、SecondOf、MilliSecondOf 返回的都是 Word 类型.

    unit Unit1;
    
    interface
    
    uses
      Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
      Dialogs;
    
    type
      TForm1 = class(TForm)
        procedure FormCreate(Sender: TObject);
      end;
    
    var
      Form1: TForm1;
    
    implementation
    
    {$R *.dfm}
    
    uses DateUtils;
    
    procedure TForm1.FormCreate(Sender: TObject);
    var
      dt,d,t: TDateTime;
      Year,Month,Week,Day,Hour,Minute,Second,MilliSecond: Word;
    begin
      dt := StrToDateTime('2009-5-20 11:22:33');
    
      d := DateOf(dt);
      ShowMessage(DateToStr(d)); //2009-5-20
    
      t := TimeOf(dt);
      ShowMessage(TimeToStr(t)); //11:22:33
    
      Year        := YearOf(dt);
      Month       := MonthOf(dt);
      Week        := WeekOf(dt);
      Day         := DayOf(dt);
      Hour        := HourOf(dt);
      Minute      := MinuteOf(dt);
      Second      := SecondOf(dt);
      MilliSecond := MilliSecondOf(dt);
    
      ShowMessageFmt('%d,%d,%d,%d,%d,%d,%d,%d', [Year,Month,Week,Day,Hour,Minute,
        Second,MilliSecond]); {2009,5,20,11,22,33,0}
    end;
    
    end.
    


    DateUtils-Function
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  • 原文地址:https://www.cnblogs.com/del/p/1467430.html
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