Get the Content-Type of a Related Item

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Demonstrates the Chilkat Email.GetRelatedContentType method, which returns the Content-Type of the Nth related content item in an email. The index is zero-based. This example adds a related style sheet and reads its content type.

Background: Each related item declares a Content-Type — image/png for an inline image, text/css for a style sheet, and so on — that tells the rendering client how to use it. Reading the content type lets a program enumerate a message's embedded resources and act on them by kind, for example collecting every inline image while ignoring the style sheets.

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#include <C_CkEmail.h>

void ChilkatSample(void)
    {
    HCkEmail email;
    const char *ct;

    //  Demonstrates the GetRelatedContentType method, which returns the Content-Type of the Nth
    //  related content item in an email.  The index is zero-based.

    email = CkEmail_Create();
    CkEmail_putSubject(email,"GetRelatedContentType example");

    //  The HTML references the style sheet by name (Content-Location).
    CkEmail_SetHtmlBody(email,"<html><head><link rel=\"stylesheet\" href=\"styles.css\"/></head><body>Styled.</body></html>");

    //  Add the related style sheet (index 0).
    CkEmail_AddRelatedString2(email,"styles.css","body { color: navy; }","utf-8");

    //  Read the Content-Type of the first related item (index 0).
    ct = CkEmail_getRelatedContentType(email,0);
    printf("Related item 0 Content-Type: %s\n",ct);


    CkEmail_Dispose(email);

    }