MIME Multipart Boundary and Preamble Properties

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Demonstrates the Boundary property, which gets or sets the raw boundary token of a multipart entity (without surrounding quotation marks), and UseMmDescription, which controls whether the conventional preamble text is emitted when serializing a multipart entity.

#include <CkMime.h>

void ChilkatSample(void)
    {
    bool success = false;

    CkMime mime;

    //  Create a multipart/mixed entity.
    success = mime.NewMultipartMixed();
    if (success == false) {
        std::cout << mime.lastErrorText() << "\r\n";
        return;
    }

    //  Boundary is the raw boundary token, without surrounding quotation marks.  Chilkat quotes it
    //  automatically in the serialized header when required.
    mime.put_Boundary("example-boundary");

    //  UseMmDescription controls whether the conventional preamble text
    //  "This is a multi-part message in MIME format." is emitted.  The default is false.
    mime.put_UseMmDescription(true);

    //  Add a simple part so the multipart has content.
    CkMime part;
    success = part.SetBodyFromPlainText("First part.");
    if (success == false) {
        std::cout << part.lastErrorText() << "\r\n";
        return;
    }

    success = mime.AppendPart(part);
    if (success == false) {
        std::cout << mime.lastErrorText() << "\r\n";
        return;
    }

    std::cout << "Boundary = " << mime.boundary() << "\r\n";

    const char *mimeStr = mime.getMime();
    if (mime.get_LastMethodSuccess() == false) {
        std::cout << mime.lastErrorText() << "\r\n";
        return;
    }

    std::cout << mimeStr << "\r\n";
    }