Delphi DLL

Add an Attachment from a BinData Object

Demonstrates the Chilkat Email.AddAttachmentBd method, which adds an attachment using the contents of a BinData object. The first argument is the attachment filename, the second is the BinData, and the third is the content type — if empty, it is inferred from the filename extension. This example loads a PDF into a BinData and attaches it.

Background: BinData is Chilkat's container for raw binary data. Attaching from a BinData is the right approach when the file's bytes are already in memory — generated on the fly, downloaded, or read from a database — rather than sitting on disk (which would use AddFileAttachment). Chilkat Base64-encodes the bytes into the message automatically.

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var
success: Boolean;
email: HCkEmail;
bd: HCkBinData;

begin
success := False;

//  Demonstrates the AddAttachmentBd method, which adds an attachment using the contents of a
//  BinData object.  The first argument is the attachment filename, the second is the BinData
//  object, and the third is the content type (inferred from the filename extension if empty).

email := CkEmail_Create();
CkEmail_putSubject(email,'Attach from BinData');
CkEmail_putBody(email,'Please see the attached file.');

//  Load a file into a BinData object, then attach it.
bd := CkBinData_Create();
success := CkBinData_LoadFile(bd,'qa_data/attachments/report.pdf');
if (success = False) then
  begin
    Memo1.Lines.Add(CkBinData__lastErrorText(bd));
    Exit;
  end;

success := CkEmail_AddAttachmentBd(email,'report.pdf',bd,'application/pdf');
if (success = False) then
  begin
    Memo1.Lines.Add(CkEmail__lastErrorText(email));
    Exit;
  end;

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

//  Note: The path "qa_data/attachments/report.pdf" is a relative local filesystem path,
//  relative to the current working directory of the running application.

CkEmail_Dispose(email);
CkBinData_Dispose(bd);