Objective-C

Change the Filename of a Related Item

Demonstrates the Chilkat Email.SetRelatedFilename method, which sets (changes) the filename stored for a related item within the email. The index is zero-based. This example adds a related style sheet and renames it, printing the filename before and after.

Background: A related item's filename identifies the embedded resource within the message. Changing it is occasionally needed to match how the HTML body references the resource, or to give an embedded image or style sheet a cleaner name. Keep in mind that if the HTML links to the item by that name (via Content-Location), the reference should be kept in sync with the new filename.

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Objective-C

#import <CkoEmail.h>

BOOL success = NO;

//  Demonstrates the SetRelatedFilename method, which sets (changes) the filename of a
//  related item within the email.  The index is zero-based.

CkoEmail *email = [[CkoEmail alloc] init];
email.Subject = @"Set related item filename";

//  Set an HTML body and add a related style sheet (index 0).
[email SetHtmlBody: @"<html><head><link rel=\"stylesheet\" href=\"styles.css\"/></head><body>Styled.</body></html>"];
[email AddRelatedString2: @"styles.css" str: @"body { color: navy; }" charset: @"utf-8"];
NSLog(@"%@%@",@"Related filename before: ",[email GetRelatedFilename: [NSNumber numberWithInt: 0]]);

//  Change the filename of the related item at index 0.
success = [email SetRelatedFilename: [NSNumber numberWithInt: 0] filename: @"main.css"];
if (success == NO) {
    NSLog(@"%@",email.LastErrorText);
    return true;
}

NSLog(@"%@%@",@"Related filename after: ",[email GetRelatedFilename: [NSNumber numberWithInt: 0]]);