Objective-C

Create a multipart/related MIME Entity

Demonstrates the Chilkat Mime.NewMultipartRelated method, which initializes the object as an empty multipart/related entity. It takes no arguments; the primary part and its related resources are then appended.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: multipart/related ties a primary part to the resources it references — most commonly an HTML body and the inline images it embeds via cid: references. Unlike a plain attachment, a related image is displayed within the message rather than listed separately. The HTML part comes first, followed by each referenced resource with a matching Content-ID.

Chilkat Objective-C Downloads

Download Chilkat for Objective-C

Objective-C

#import <CkoMime.h>

BOOL success = NO;

//  Demonstrates the Mime.NewMultipartRelated method, which initializes the object as an empty
//  multipart/related entity, clearing any existing content.  It takes no arguments.

CkoMime *mime = [[CkoMime alloc] init];

success = [mime NewMultipartRelated];
if (success == NO) {
    NSLog(@"%@",mime.LastErrorText);
    return;
}

//  multipart/related groups a primary part with the resources it references, such as an HTML body
//  and the inline images it displays.
CkoMime *htmlPart = [[CkoMime alloc] init];
success = [htmlPart SetBodyFromHtml: @"<html><body><img src=\"cid:logo\"></body></html>"];
if (success == NO) {
    NSLog(@"%@",htmlPart.LastErrorText);
    return;
}

success = [mime AppendPart: htmlPart];
if (success == NO) {
    NSLog(@"%@",mime.LastErrorText);
    return;
}

success = [mime AppendPartFromFile: @"qa_data/logo.png"];
if (success == NO) {
    NSLog(@"%@",mime.LastErrorText);
    return;
}

NSLog(@"%@%d",@"Number of parts: ",[mime.NumParts intValue]);