DelphiBasics
LongTimeFormat
Variable
Long version of the time to string format SysUtils unit
  var LongTimeFormat : string;
Description
The LongTimeFormat variable provides the long (extended) formatting used for certain time to string conversions.
 
It is used by the DateTimeToString routine when the 'tt' formatting is used. The following formatting character strings can be used in the LongTimeFormat string:
 
= Hour with no leading 0's
hh  = Hour as 2 digits
= Minute with no leading 0's
nn  = Minute as 2 digits
= Seconds with no leading 0's
ss  = Seconds as 2 digits
= Milli-seconds with no leading 0's
zzz  = Milli-seconds as 3 digits
Notes
The default value is calculated from LOCALE_ITIME and LOCALE_ITLZERO
Related commands
DateTimeToStr Converts TDateTime date and time values to a string
DateTimeToString Rich formatting of a TDateTime variable into a string
FormatDateTime Rich formatting of a TDateTime variable into a string
ShortTimeFormat Short version of the time to string format
TimeToStr Converts a TDateTime time value to a string
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Example code : Illustrating customised LongTimeFormat setting
var
  myDate : TDateTime;
  formattedDate : string;

begin
  myDate := StrToTime('15:06:23.456');

  // Display using the default LongTimeFormat
  DateTimeToString(formattedDate, 'tt', myDate);
  ShowMessage('15:06:23.456 using  default = '+formattedDate);

  // Change the display formatting
  LongTimeFormat := 'hh nn ss (zzz)';
  DateTimeToString(formattedDate, 'tt', myDate);
  ShowMessage('15:06:23.456 using override = '+formattedDate);
end;
Show full unit code
   15:06:23.456 using  default = 15:06:23
   15:06:23.456 using override = 15 06 23 (456)
 
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