DelphiBasics RecodeDate Function Change only the date part of a TDateTime variable DateUtils unit

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  Download this web site as a Windows program.

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

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