function DecodeDate(const Value: string; out DateTime: TDateTime; out DateTimeOffset: Integer): Boolean;
| Value | string. PDF date string in the PDF date format: D:YYYYMMDDHHmmSSOHH'mm' (e.g. "D:20240515120000+08'00'"). |
| DateTime | TDateTime. Output parameter that receives the decoded date and time value. |
| DateTimeOffset | Integer. Output parameter that receives the UTC offset in minutes. Positive values indicate east of UTC; negative values indicate west. |
True if Value was successfully parsed as a valid PDF date string. Returns False אם המחרוזת ריקה, פגומה, או אינה עומדת בפורמט התאריך של PDFDecodeDate is a unit-level global function in the PDFium unit. It parses a PDF date string and converts it to a Delphi TDateTime value together with the UTC timezone offset in minutes.
PDF documents store dates in the format D:YYYYMMDDHHmmSSOHH'mm', where O is the relationship to UTC (+, -, or Z). Use this function to decode the raw strings returned by properties such as CreationDate and ModifiedDate.
The DateTimeOffset out parameter contains the signed UTC offset in minutes (for example, UTC+8 gives 480, UTC-5 gives -300). The DateTime out parameter is set to the local time as encoded in the PDF string, not adjusted to UTC.
var
DT: TDateTime;
Offset: Integer;
begin
if DecodeDate(Pdf.CreationDate, DT, Offset) then
begin
ShowMessage('Created: ' + DateTimeToStr(DT));
ShowMessage('UTC offset (minutes): ' + IntToStr(Offset));
end;
end;