Iterate and Display Email Header Fields

Example source code to iterate over an email's header fields and print each name/value pair.

// The Chilkat Mail library is also available as an ActiveX component
// or .NET class with the identical set of methods and properties.

// Iterate over an email's header fields.
void EmailExample(void)
    {
    CkString str;
    CkMailMan mailman;

    // Any string passed to UnlockComponent begins the 30-day trial.
    bool unlocked = mailman.UnlockComponent("30-day trial");
    if (!unlocked)
	{
	printf("Failed to unlock component\n");
	return;
	}

    // Set the POP3 port to the standard MS Exchange Server SSL POP3 port 995
    // mailman.put_MailPort(995);
    // Tell the mailman to connect to POP3 using SSL
    // mailman.put_PopSsl(true);

    mailman.put_MailHost("mail.chilkatsoft.com");
    mailman.put_PopUsername("matt");
    mailman.put_PopPassword(myPassword);

    // Copy email from the POP3 server.
    CkEmailBundle *bundle = 0;
    bundle = mailman.CopyMail();
    if (!bundle)
	{
	mailman.LastErrorText(str);
	printf("%s",str.getString());
	return;
	}

    int i;
    int n = bundle->get_MessageCount();

    for (i=0; i<n; i++)
	{
	CkEmail *email = bundle->GetEmail(i);

	printf("********* Email %d ***********\n",i);

	int numFields = email->get_NumHeaderFields();

	// Display each header field.
	int j;
	CkString strName;
	CkString strValue;
	for (j=0; j<numFields; j++)
	    {
	    email->GetHeaderFieldName(j,strName);
	    email->GetHeaderFieldValue(j,strValue);
	    printf("%s: [%s]\n",strName.getString(),strValue.getString());
	    }

	delete email;
	}

    delete bundle;

    return;
    }