Using a .cer Certificate File for Encrypted Email

Sends an encrypted email using the recipient's digital certificate from a .cer file.

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// Needs #include <CkMailMan.h>
// Needs #include <CkCert.h>
// Needs #include <CkEmail.h>

    CkString strOut;

    //  The mailman object is used for sending and receiving email.
    CkMailMan mailman;

    //  Any string argument automatically begins the 30-day trial.
    bool success;
    success = mailman.UnlockComponent("30-day trial");
    if (success != true) {
        strOut.append("Component unlock failed\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    //  Set the SMTP server.
    mailman.put_SmtpHost("smtp.comcast.net");

    //  Load the .cer file into a certificate object:
    CkCert cert;
    success = cert.LoadFromFile("comodoChilkat.cer");
    if (success != true) {
        strOut.append(cert.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    //  Create a new email object
    CkEmail email;

    email.put_Subject("This email is encrypted");
    email.put_Body("This is a digitally encrypted mail");
    email.put_From("Chilkat Support <support@chilkatsoft.com>");
    email.AddTo("Comodo Test","comodo@chilkatsoft.com");

    //  Indicate that the email is to be sent encrypted.
    email.put_SendEncrypted(true);

    //  Specify the certificate:
    email.SetEncryptCert(cert);

    success = mailman.SendEmail(email);
    if (success != true) {
        strOut.append(mailman.lastErrorText());
        strOut.append("\r\n");
    }
    else {
        strOut.append("Mail Sent!\r\n");
    }


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());