Pascal (Lazarus/Delphi)

XMP Array Property - Bag, Seq, or Alt

See more XMP Examples

How to insert or update an XMP array property (bag, seq, or alt). Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.Xmp,
  Chilkat.StringArray,
  Chilkat.Xml;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  xmp: TXmp;
  xml: TXml;
  sa: TStringArray;

begin
  success := False;

  //  This requires the Chilkat API to have been previously unlocked.
  //  See Global Unlock Sample for sample code.

  xmp := TXmp.Create;

  //  Load a JPG or TIF image file.
  //  Sample JPG's with XMP metadata may be found at:
  //  http://www.chilkatsoft.com/testData/xmp/sample1.jpg
  //  http://www.chilkatsoft.com/testData/xmp/sample2.jpg
  //  http://www.chilkatsoft.com/testData/xmp/sample3.jpg
  success := xmp.LoadAppFile('sample1.jpg');
  if (success <> True) then
    begin
      WriteLn(xmp.LastErrorText);
      Exit;
    end;

  WriteLn('Num embedded XMP docs: ' + xmp.NumEmbedded);

  //  Assuming there is at least one, get the 1st.
  //  (There is typically never more than one, but theoretically it's possible.)

  xml := xmp.GetEmbedded(0);
  if (xmp.LastMethodSuccess = True) then
    begin

      //  Create an object to hold one or more string values.
      sa := TStringArray.Create;
      success := sa.Append('value_1');
      success := sa.Append('value_2');
      //  ...

      success := xmp.AddArray(xml,'bag','Iptc4xmpCore:Chilkat',sa);
      if (success <> True) then
        begin
          WriteLn(xmp.LastErrorText);
        end
      else
        begin
          //  Save the JPG.
          success := xmp.SaveAppFile('modified.jpg');
          if (success <> True) then
            begin
              WriteLn(xmp.LastErrorText);
            end;

        end;
      xml.Free;

    end
  else
    begin
      WriteLn(xmp.LastErrorText);
    end;


  xmp.Free;
      sa.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.