Delphi ActiveX

Add a Related Item from BinData by Content-Location

Demonstrates the Chilkat Email.AddRelatedBd2 method, which adds a related item using the binary data in a BinData object, addressed by Content-Location. The second argument specifies the filename, path, or URL used by the corresponding HTML reference. This example embeds an image referenced as logo.png.

Background: This is the binary counterpart of AddRelatedString2 and the Content-Location sibling of AddRelatedBd. Instead of a generated cid: reference, the HTML keeps an ordinary src="logo.png" and the related part is matched to it by name — convenient when turning an existing web page into an email so its original relative URLs keep working.

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var
success: Integer;
email: TChilkatEmail;
bdImage: TChilkatBinData;

begin
success := 0;

//  Demonstrates the AddRelatedBd2 method, which adds a related item using the binary data in
//  a BinData object, addressed by Content-Location.  The second argument specifies the filename/path/URL
//  used by the corresponding HTML reference.

email := TChilkatEmail.Create(Self);
email.Subject := 'Related image from BinData (Content-Location)';

//  The HTML references the image by the same name used as the Content-Location.
email.SetHtmlBody('<html><body><img src="logo.png"/></body></html>');

//  Load the image data from a file into a BinData object.
bdImage := TChilkatBinData.Create(Self);
success := bdImage.LoadFile('qa_data/images/logo.png');
if (success = 0) then
  begin
    Memo1.Lines.Add(bdImage.LastErrorText);
    Exit;
  end;

//  Add the image as a related item addressed by Content-Location "logo.png".
success := email.AddRelatedBd2(bdImage.ControlInterface,'logo.png');
if (success = 0) then
  begin
    Memo1.Lines.Add(email.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('NumRelatedItems = ' + IntToStr(email.NumRelatedItems));

//  Note: The path "qa_data/images/logo.png" is a relative local filesystem path,
//  relative to the current working directory of the running application.