C++

Set a MIME Body from Binary Bytes (BinData)

Demonstrates the Chilkat Mime.SetBodyBd method, which sets the decoded body bytes from a BinData, changes the transfer encoding to base64, and preserves the bytes exactly. The only argument is the BinData.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: This is the direct way to put arbitrary binary content into a part from memory — a generated image, a decrypted blob — without a temporary file. Chilkat base64-encodes it so the bytes survive text-based transports unchanged. Note it does not set a Content-Type or disposition, so assign those yourself to describe what the bytes are.

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C++

#include <CkBinData.h>
#include <CkMime.h>

void ChilkatSample(void)
    {
    bool success = false;

    //  Demonstrates the Mime.SetBodyBd method, which sets the decoded body bytes from a BinData,
    //  changes the transfer encoding to base64, and preserves the bytes exactly.  The only argument is
    //  the BinData.

    //  Put the binary body bytes into a BinData.
    CkBinData bd;
    success = bd.LoadFile("qa_data/photo.jpg");
    if (success == false) {
        std::cout << bd.lastErrorText() << "\r\n";
        return;
    }

    CkMime mime;

    //  Set a Content-Type for the binary content (SetBodyBd does not set one itself).
    mime.put_ContentType("image/jpeg");

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

    std::cout << "Body set from " << bd.get_NumBytes() << " bytes." << "\r\n";
    }