Unicode C

Add a Related Item from BinData by Content-Location

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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Unicode C

#include <C_CkEmailW.h>
#include <C_CkBinDataW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkEmailW email;
    HCkBinDataW 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 = CkEmailW_Create();
    CkEmailW_putSubject(email,L"Related image from BinData (Content-Location)");

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

    //  Load the image data from a file into a BinData object.
    bdImage = CkBinDataW_Create();
    success = CkBinDataW_LoadFile(bdImage,L"qa_data/images/logo.png");
    if (success == FALSE) {
        wprintf(L"%s\n",CkBinDataW_lastErrorText(bdImage));
        CkEmailW_Dispose(email);
        CkBinDataW_Dispose(bdImage);
        return true;
    }

    //  Add the image as a related item addressed by Content-Location "logo.png".
    success = CkEmailW_AddRelatedBd2(email,bdImage,L"logo.png");
    if (success == FALSE) {
        wprintf(L"%s\n",CkEmailW_lastErrorText(email));
        CkEmailW_Dispose(email);
        CkBinDataW_Dispose(bdImage);
        return true;
    }

    wprintf(L"NumRelatedItems = %d\n",CkEmailW_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.


    CkEmailW_Dispose(email);
    CkBinDataW_Dispose(bdImage);

    }