(C++) Access Attached Message (Embedded Email)

How to access an email embedded within another email (i.e. an attached message).

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#include <CkEmail.h>

void ChilkatSample(void)
    {
    CkEmail email;

    // Load an email from a .eml
    bool success = email.LoadEml("embeddedEmail.eml");
    if (success != true) {
        std::cout << email.lastErrorText() << "\r\n";
        return;
    }

    // Display how many attached emails are embedded within
    // this one:
    int numAttached = email.get_NumAttachedMessages();
    std::cout << "numAttached = " << numAttached << "\r\n";

    // Get the 1st attached message.
    CkEmail *email2 = 0;
    email2 = email.GetAttachedMessage(0);
    if (email.get_LastMethodSuccess() == true) {

        // Display the subject, From, and a header field...
        std::cout << email2->subject() << "\r\n";
        std::cout << email2->ck_from() << "\r\n";
        std::cout << email2->getHeaderField("X-SOMETHING") << "\r\n";
    }
    }