Delphi DLL

Set the Charset of an Attachment

Demonstrates the Chilkat Email.SetAttachmentCharset method, which sets the charset parameter of the Content-Type header field for the attachment at a given zero-based index. This example adds a text attachment and sets its charset to utf-8.

Background: For a text attachment, the charset parameter tells the receiving client which character encoding the bytes use, so accented or non-Latin text renders correctly. Setting it explicitly (typically utf-8) removes ambiguity when the attachment contains non-ASCII content — without it, a client may guess wrong and display garbled characters.

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Delphi DLL

var
success: Boolean;
email: HCkEmail;

begin
success := False;

//  Demonstrates the SetAttachmentCharset method, which sets the charset parameter of the
//  Content-Type header field for the attachment at the given zero-based index.

email := CkEmail_Create();
CkEmail_putSubject(email,'Set attachment charset');

CkEmail_AddStringAttachment(email,'notes.txt','Some notes.');

//  Set the charset of the first attachment (index 0) to utf-8.
success := CkEmail_SetAttachmentCharset(email,0,'utf-8');
if (success = False) then
  begin
    Memo1.Lines.Add(CkEmail__lastErrorText(email));
    Exit;
  end;

//  The attachment's Content-Type now includes charset="utf-8".
Memo1.Lines.Add(CkEmail__getMime(email));

CkEmail_Dispose(email);