Heavyweight Callbacks with DataSnap - Part 1: Thick Client

By: Calvin Tang

Abstract: Learn how you can implement and use heavyweight callbacks in DataSnap with a few clicks and a couple lines of code. Heavyweight callbacks allow for communications to registered client when changes occur on the server.This technical demonstration shows you how to use heavyweight callbacks with DataSnap. This demo shows how to use thick clients. Part 2 shows how to use heavyweight callbacks with thin clients with REST and a web browser.