(Delphi ActiveX) Add XMP MetaData to JPG or TIFF

Demonstrates how to add XMP metadata to a JPG or TIFF image that doesn't already have XMP metadata.

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
xmp: TChilkatXmp;
xml: IChilkatXml;
success: Integer;

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

xmp := TChilkatXmp.Create(Self);

// The first step is to create a new XMP document, which is nothing
// more than XML.  The NewXmp method returns an XML document with
// the standard XMP boilerplate.  
xml := xmp.NewXmp();

// Add some properties...
success := xmp.AddSimpleStr(xml,'Iptc4xmpCore:Chilkat','Blah blah');
// If you wish to view the XML, save it to a file and review it
// with a text editor:
success := xml.SaveXml('newXmp.xml');
if (success <> 1) then
  begin
    Memo1.Lines.Add(xml.LastErrorText);
    Exit;
  end;

// To add the XMP to the JPG (or TIFF), simply load the JPG,
// append the XMP, and save:
success := xmp.LoadAppFile('scream.jpg');
if (success <> 1) then
  begin
    Memo1.Lines.Add(xmp.LastErrorText);
    Exit;
  end;
success := xmp.Append(xml);
if (success <> 1) then
  begin
    Memo1.Lines.Add(xmp.LastErrorText);
    Exit;
  end;
success := xmp.SaveAppFile('screamOut.jpg');
if (success <> 1) then
  begin
    Memo1.Lines.Add(xmp.LastErrorText);
    Exit;
  end;
end;