Rust

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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Rust


// 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.

let email = chilkat::Email::new();
email.set_subject("Related image from BinData (Content-Location)");

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

// Load the image data from a file into a BinData object.
let bd_image = chilkat::BinData::new();
if bd_image.load_file("qa_data/images/logo.png").is_err() {
    println!("{}", bd_image.last_error_text());
    return;
}

// Add the image as a related item addressed by Content-Location "logo.png".
if email.add_related_bd2(&bd_image, "logo.png").is_err() {
    println!("{}", email.last_error_text());
    return;
}

println!("NumRelatedItems = {}", email.num_related_items());

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