gistfile1.mm

NSString *alertMessage = NSLocalizedString(@"Are you sure you want to sign out?", nil);
SGAlertView *alertView = [[SGAlertView alloc] initWithTitle:nil message:alertMessage];

[alertView addButtonWithTitle:NSLocalizedString(@"Cancel", nil) block:^{}];  
[alertView addButtonWithTitle:NSLocalizedString(@"Sign out", nil) block:^{
    // Handle the sign out stuff
}];
  
[alertView show];
[alertView release];