function RecodeDate ( const SourceDate : TDateTime; const Year, Month, Day : Word ) : TDateTime;
Description
The RecodeDate function allows the Year, Month and Day values of a TDateTime variable to be changed without affecting the time.
Related commands
DecodeDate Extracts the year, month, day values from a TDateTime var.
DecodeDateTime Breaks a TDateTime variable into its date/time parts
DecodeTime Break a TDateTime value into individual time values
EncodeDate Build a TDateTime value from year, month and day values
EncodeDateTime Build a TDateTime value from day and time values
EncodeTime Build a TDateTime value from hour, min, sec and msec values
RecodeTime Change only the time part of a TDateTime variable
ReplaceDate Change only the date part of a TDateTime variable
ReplaceTime Change only the time part of a TDateTime variable
Example code : Change the date without changing the time
var
myDate : TDateTime;
begin
// Set the date to 29/10/2002 at 12:34:56
myDate := EncodeDateTime(2002, 10, 29, 12, 34, 56, 0);
ShowMessage('The starting date/time = '+DateTimeToStr(myDate));
// Now change the date portion without touching the time
myDate := RecodeDate(myDate, 1957, 2, 18);
ShowMessage('The new date/time = '+DateTimeToStr(myDate));
end;
Show full unit code
The starting date/time = 29/10/2002 12:34:56
The new date/time = 18/02/1957 12:34:56