Hi Jerry, Open the "Class View" and right click on your dialog class, then take properties, and a window will popup with buttons at the top for events, messages, etc. You are right, it is not intuitive. Brian

Yes, you are right on both accounts. There are numerous code examples here to help. Brian

OnSend() is a notification to your socket that it is ok to send data. When you call Send() to send your data, you should wait for a call to your OnSend() before sending more data. Brian