IsLeapYear、IsInLeapYear - 是否是闰年

SysUtils.IsLeapYear();

DateUtils.IsInLeapYear();


 
   

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

  b: Boolean;

begin

  b := IsLeapYear(2009); //False

  b := IsLeapYear(2012); //True



  b := IsInLeapYear(StrToDateTime('2009-1-1')); //False

  b := IsInLeapYear(StrToDateTime('2012-1-1')); //True



//  ShowMessage(BoolToStr(b, True));

end;



end.

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DateUtils-Function

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