Add an Attachment from a BinData Object

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Demonstrates the Chilkat Email.AddAttachmentBd method, which adds an attachment using the contents of a BinData object. The first argument is the attachment filename, the second is the BinData, and the third is the content type — if empty, it is inferred from the filename extension. This example loads a PDF into a BinData and attaches it.

Background: BinData is Chilkat's container for raw binary data. Attaching from a BinData is the right approach when the file's bytes are already in memory — generated on the fly, downloaded, or read from a database — rather than sitting on disk (which would use AddFileAttachment). Chilkat Base64-encodes the bytes into the message automatically.

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#include <C_CkEmail.h>
#include <C_CkBinData.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkEmail email;
    HCkBinData bd;

    success = FALSE;

    //  Demonstrates the AddAttachmentBd method, which adds an attachment using the contents of a
    //  BinData object.  The first argument is the attachment filename, the second is the BinData
    //  object, and the third is the content type (inferred from the filename extension if empty).

    email = CkEmail_Create();
    CkEmail_putSubject(email,"Attach from BinData");
    CkEmail_putBody(email,"Please see the attached file.");

    //  Load a file into a BinData object, then attach it.
    bd = CkBinData_Create();
    success = CkBinData_LoadFile(bd,"qa_data/attachments/report.pdf");
    if (success == FALSE) {
        printf("%s\n",CkBinData_lastErrorText(bd));
        CkEmail_Dispose(email);
        CkBinData_Dispose(bd);
        return;
    }

    success = CkEmail_AddAttachmentBd(email,"report.pdf",bd,"application/pdf");
    if (success == FALSE) {
        printf("%s\n",CkEmail_lastErrorText(email));
        CkEmail_Dispose(email);
        CkBinData_Dispose(bd);
        return;
    }

    printf("NumAttachments = %d\n",CkEmail_getNumAttachments(email));

    //  Note: The path "qa_data/attachments/report.pdf" is a relative local filesystem path,
    //  relative to the current working directory of the running application.


    CkEmail_Dispose(email);
    CkBinData_Dispose(bd);

    }