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  • WithinPastYears、WithinPastMonths、WithinPastWeeks、WithinPastDays ... 判断两个时间差是否在一个指定范围内

    DateUtils.WithinPastYears();
    DateUtils.WithinPastMonths();
    DateUtils.WithinPastWeeks();
    DateUtils.WithinPastDays();
    DateUtils.WithinPastHours();
    DateUtils.WithinPastMinutes();
    DateUtils.WithinPastSeconds();
    DateUtils.WithinPastMilliSeconds(); 
    

    unit Unit1;
    
    interface
    
    uses
      Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
      Dialogs, StdCtrls;
    
    type
      TForm1 = class(TForm)
        procedure FormCreate(Sender: TObject);
      end;
    
    var
      Form1: TForm1;
    
    implementation
    
    {$R *.dfm}
    
    uses DateUtils;
    
    procedure TForm1.FormCreate(Sender: TObject);
    var
      t1,t2: TDateTime;
      b: Boolean;
    begin
      t1 := StrToDateTime('2009-5-20 11:22:33');
      t2 := StrToDateTime('2009-5-21 11:22:33');
    
      {两个时间差是否在 24 年内}
      b := WithinPastYears(t1, t2, 24); //True
    
      {两个时间差是否在 24 个月内}
      b := WithinPastMonths(t1, t2, 24); //True
    
      {两个时间差是否在 24 个周内}
      b := WithinPastWeeks(t1, t2, 24);  //True
    
      {两个时间差是否在 24 天内}
      b := WithinPastDays(t1, t2, 24);   //True
    
      {两个时间差是否在 24 个小时内}
      b := WithinPastHours(t1, t2, 24);  //True
    
      {两个时间差是否在 24 分钟内}
      b := WithinPastMinutes(t1, t2, 24);      //False
    
      {两个时间差是否在 24 秒内}
      b := WithinPastSeconds(t1, t2, 24);      //False
    
      {两个时间差是否在 24 毫秒内}
      b := WithinPastMilliSeconds(t1, t2, 24); //False
    
    //  ShowMessage(BoolToStr(b, True));
    end;
    
    end.
    


    DateUtils-Function
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  • 原文地址:https://www.cnblogs.com/del/p/1472657.html
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