Objective-C

Remove a Single Related Item from an Email

Demonstrates the Chilkat Email.DropRelatedItem method, which removes the related item at a given zero-based index. A related item is typically an embedded image or style sheet referenced from the HTML body (via a cid: link or Content-Location). This example adds a related style sheet, then removes it by index, printing the count before and after.

Background: Related items live in the message's multipart/related enclosure and are indexed from 0 to NumRelatedItems - 1. Removing one by index is useful when editing a received message — for example stripping a tracking pixel or an unwanted embedded image — while leaving the HTML body and any other related resources in place. To remove them all at once, use DropRelatedItems.

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Objective-C

#import <CkoEmail.h>

//  Demonstrates the DropRelatedItem method, which removes the related item at a given
//  zero-based index.  A related item is typically an embedded image or style sheet
//  referenced from the HTML body.

CkoEmail *email = [[CkoEmail alloc] init];

//  Set an HTML body that references a related style sheet by name (Content-Location).
[email SetHtmlBody: @"<html><head><link rel=\"stylesheet\" href=\"styles.css\"/></head><body>Styled.</body></html>"];

//  Add the related item (becomes index 0).
[email AddRelatedString2: @"styles.css" str: @"body { color: navy; }" charset: @"utf-8"];
NSLog(@"%@%d",@"NumRelatedItems before = ",[email.NumRelatedItems intValue]);

//  Remove the related item at index 0.
[email DropRelatedItem: [NSNumber numberWithInt: 0]];

NSLog(@"%@%d",@"NumRelatedItems after = ",[email.NumRelatedItems intValue]);