学習の公式例-SysUtils.EncodeDate、EncodeTime、StrToDate、StrToTime、StrToDateTime

コードファイル:

unit Unit1;



interface



uses

  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,

  Dialogs, StdCtrls;



type

  TForm1 = class(TForm)

    ListBox1: TListBox;

    Button1: TButton;

    Button2: TButton;

    procedure Button1Click(Sender: TObject);

    procedure Button2Click(Sender: TObject);

  end;



var

  Form1: TForm1;



implementation



{$R *.dfm}



procedure TForm1.Button1Click(Sender: TObject);

var

  D: TDate;

  T: TTime;

begin

  D := EncodeDate(2008, 9, 11);

  T := EncodeTime(14, 56, 12, 1);



  ListBox1.Clear;

  ListBox1.Items.Add(FormatDateTime('yyyy/mm/dd', D));

  ListBox1.Items.Add(FormatDateTime('hh:nn:ss:zzz', T));

end;



procedure TForm1.Button2Click(Sender: TObject);

var

  D: TDate;

  T: TTime;

  DT: TDateTime;

begin

  D := StrToDate('2008-9-11');

  T := StrToTime('14:56:06');

  DT := StrToDateTime('2008-9-11 14:56:06');



  ListBox1.Clear;

  ListBox1.Items.Add(DateToStr(D));

  ListBox1.Items.Add(TimeToStr(T));

  ListBox1.Items.Add(DateTimeToStr(DT));

end;



end.


 
   

フォームファイル:

object Form1: TForm1

  Left = 0

  Top = 0

  Caption = 'Form1'

  ClientHeight = 93

  ClientWidth = 249

  Color = clBtnFace

  Font.Charset = DEFAULT_CHARSET

  Font.Color = clWindowText

  Font.Height = -11

  Font.Name = 'Tahoma'

  Font.Style = []

  OldCreateOrder = False

  PixelsPerInch = 96

  TextHeight = 13

  object Button1: TButton

    Left = 158

    Top = 14

    Width = 75

    Height = 25

    Caption = 'Button1'

    TabOrder = 0

    OnClick = Button1Click

  end

  object ListBox1: TListBox

    Left = 0

    Top = 0

    Width = 145

    Height = 93

    Align = alLeft

    ItemHeight = 13

    TabOrder = 1

    ExplicitHeight = 206

  end

  object Button2: TButton

    Left = 158

    Top = 53

    Width = 75

    Height = 25

    Caption = 'Button2'

    TabOrder = 2

    OnClick = Button2Click

  end

end