(C) Send HTML Email with Embedded Image Loaded from Memory

Demonstrates how to compose an HTML email with an embedded image where the image data is loaded directly from memory.

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#include <C_CkFileAccess.h>
#include <C_CkByteData.h>
#include <C_CkMailMan.h>
#include <C_CkEmail.h>
#include <C_CkStringBuilder.h>

void ChilkatSample(void)
    {
    HCkFileAccess fac;
    HCkByteData imageBytes;
    HCkMailMan mailman;
    HCkEmail email;
    const char *contentIdStarfish;
    HCkStringBuilder sbHtml;
    int numReplacements;
    BOOL success;

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // First load image data into memory.
    // This example loads image data from a file.
    // However, your application could get the image data from any other source, such as
    // from a database.
    fac = CkFileAccess_Create();
    imageBytes = CkByteData_Create();
    success = CkFileAccess_ReadEntireFile(fac,"qa_data/jpg/starfish.jpg",imageBytes);

    // The mailman object is used for sending and receiving email.
    mailman = CkMailMan_Create();

    // Use your SMTP server hostname.  This example uses office365, but it could be any SMTP server..
    CkMailMan_putSmtpHost(mailman,"outlook.office365.com");
    CkMailMan_putSmtpPort(mailman,587);
    CkMailMan_putStartTLS(mailman,TRUE);

    // Set the SMTP login/password
    CkMailMan_putSmtpUsername(mailman,"OFFICE365-SMTP-LOGIN");
    CkMailMan_putSmtpPassword(mailman,"OFFICE365-SMTP-PASSWORD");

    // Create a new email object
    email = CkEmail_Create();
    CkEmail_putSubject(email,"HTML Email with Image Loaded from In-Memory Bytes");
    CkEmail_putFrom(email,"Chilkat Support <my-office365-user@mydomain.com>");
    CkEmail_AddTo(email,"Chilkat Support","support@chilkatsoft.com");

    contentIdStarfish = CkEmail_addRelatedData(email,"starfish.jpg",imageBytes);
    if (CkEmail_getLastMethodSuccess(email) != TRUE) {
        printf("%s\n",CkEmail_lastErrorText(email));
        CkFileAccess_Dispose(fac);
        CkByteData_Dispose(imageBytes);
        CkMailMan_Dispose(mailman);
        CkEmail_Dispose(email);
        return;
    }

    // The src attribute for the image tag is set to the contentIdStarfish:
    sbHtml = CkStringBuilder_Create();
    CkStringBuilder_Append(sbHtml,"<html><body><p>This is an HTML email with an embedded image.</p>");
    CkStringBuilder_Append(sbHtml,"<p><img src=\"cid:CONTENT_ID_STARFISH\" /></p></body></html>");
    numReplacements = CkStringBuilder_Replace(sbHtml,"CONTENT_ID_STARFISH",contentIdStarfish);

    CkEmail_SetHtmlBody(email,CkStringBuilder_getAsString(sbHtml));

    success = CkMailMan_SendEmail(mailman,email);
    if (success != TRUE) {
        printf("%s\n",CkMailMan_lastErrorText(mailman));
    }
    else {
        printf("Mail Sent!\n");
    }



    CkFileAccess_Dispose(fac);
    CkByteData_Dispose(imageBytes);
    CkMailMan_Dispose(mailman);
    CkEmail_Dispose(email);
    CkStringBuilder_Dispose(sbHtml);

    }