Add a Related Item from BinData by Content-Location

See more Email Object Examples

Demonstrates the Chilkat Email.AddRelatedBd2 method, which adds a related item using the binary data in a BinData object, addressed by Content-Location. The second argument specifies the filename, path, or URL used by the corresponding HTML reference. This example embeds an image referenced as logo.png.

Background: This is the binary counterpart of AddRelatedString2 and the Content-Location sibling of AddRelatedBd. Instead of a generated cid: reference, the HTML keeps an ordinary src="logo.png" and the related part is matched to it by name — convenient when turning an existing web page into an email so its original relative URLs keep working.

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

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

    success = FALSE;

    //  Demonstrates the AddRelatedBd2 method, which adds a related item using the binary data in
    //  a BinData object, addressed by Content-Location.  The second argument specifies the filename/path/URL
    //  used by the corresponding HTML reference.

    email = CkEmail_Create();
    CkEmail_putSubject(email,"Related image from BinData (Content-Location)");

    //  The HTML references the image by the same name used as the Content-Location.
    CkEmail_SetHtmlBody(email,"<html><body><img src=\"logo.png\"/></body></html>");

    //  Load the image data from a file into a BinData object.
    bdImage = CkBinData_Create();
    success = CkBinData_LoadFile(bdImage,"qa_data/images/logo.png");
    if (success == FALSE) {
        printf("%s\n",CkBinData_lastErrorText(bdImage));
        CkEmail_Dispose(email);
        CkBinData_Dispose(bdImage);
        return;
    }

    //  Add the image as a related item addressed by Content-Location "logo.png".
    success = CkEmail_AddRelatedBd2(email,bdImage,"logo.png");
    if (success == FALSE) {
        printf("%s\n",CkEmail_lastErrorText(email));
        CkEmail_Dispose(email);
        CkBinData_Dispose(bdImage);
        return;
    }

    printf("NumRelatedItems = %d\n",CkEmail_getNumRelatedItems(email));

    //  Note: The path "qa_data/images/logo.png" is a relative local filesystem path,
    //  relative to the current working directory of the running application.


    CkEmail_Dispose(email);
    CkBinData_Dispose(bdImage);

    }