(Objective-C) Transition from Email.GetSignedByCert to Email.LastSignerCert

Provides instructions for replacing deprecated GetSignedByCert method calls with LastSignerCert.

Note: This example requires Chilkat v11.0.0 or greater.

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#import <CkoEmail.h>
#import <CkoCert.h>

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

// ...
// ...

// ------------------------------------------------------------------------
// The GetSignedByCert method is deprecated:

CkoCert *certObj = [email GetSignedByCert];
if (email.LastMethodSuccess == NO) {
    NSLog(@"%@",email.LastErrorText);
    return;
}

// ...
// ...

// ------------------------------------------------------------------------
// Do the equivalent using LastSignerCert.
// Your application creates a new, empty Cert object which is passed 
// in the last argument and filled upon success.

CkoCert *certOut = [[CkoCert alloc] init];
BOOL success = [email LastSignerCert: [NSNumber numberWithInt: 0] cert: certOut];
if (success == NO) {
    NSLog(@"%@",email.LastErrorText);
    return;
}