| Description |
The DecodeDate procedure extracts year, month and day values from a given SourceDate TDateTime type value.
It stores the values in the output variables : Year, Month and Day.
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| Related commands |
| DecodeDateTime |
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Breaks a TDateTime variable into its date/time parts |
| DecodeTime |
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Break a TDateTime value into individual time values |
| EncodeDate |
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Build a TDateTime value from year, month and day values |
| EncodeDateTime |
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Build a TDateTime value from day and time values |
| EncodeTime |
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Build a TDateTime value from hour, min, sec and msec values |
| RecodeDate |
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Change only the date part of a TDateTime variable |
| RecodeTime |
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Change only the time part of a TDateTime variable |
| ReplaceDate |
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Change only the date part of a TDateTime variable |
| ReplaceTime |
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Change only the time part of a TDateTime variable |
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| Example code : Add a month to a date and then extract the year, month and day values |
// Full Unit code.
// -----------------------------------------------------------
// You must store this code in a unit called Unit1 with a form
// called Form1 that has an OnCreate event called FormCreate.
unit Unit1;
interface
uses
SysUtils, // Unit containing the DecodeDate command
DateUtils,
Forms, Dialogs;
type
TForm1 = class(TForm)
procedure FormCreate(Sender: TObject);
end;
var
Form1: TForm1;
implementation
{$R *.dfm} // Include form definitions
procedure TForm1.FormCreate(Sender: TObject);
var
myDate : TDateTime;
myYear, myMonth, myDay : Word;
begin
// Set up the myDate variable to have a December 2000 value
myDate := StrToDate('29/12/2000');
// Now add a month to this value
myDate := IncMonth(myDate);
// And let us see what we get
DecodeDate(myDate, myYear, myMonth, myDay);
ShowMessage('myDate now = '+DateToStr(myDate));
ShowMessage('myDay = '+IntToStr(myDay));
ShowMessage('myMonth = '+IntToStr(myMonth));
ShowMessage('myYear = '+IntToStr(myYear));
end;
end.
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| Hide full unit code |
myDate now = 29/01/2001
myDay = 29
myMonth = 1
myYear = 2001
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