OSX alerview

gistfile1.txt

   NSAlert *alert=[NSAlert alertWithMessageText:@"message" defaultButton:@"Ok" alternateButton:@"Cancel" otherButton:nil informativeTextWithFormat:@"InformativeText"];
    
    NSInteger i=[alert runModal];
    
    if (i==NSAlertDefaultReturn) {
        NSLog(@"Ok pressed");
    }
    else{
        NSLog(@"Else pressed");
    }