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COM+ Programming: A Practical Guide Using Visual C++ and ATL by Pradeep Tapadiya

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Chapter 10. Events

One of the key challenges in distributed computing is to provide a mechanism that enables interested parties to receive notification regarding changes to data. In this chapter, we will look at the infrastructure provided by COM+ to set up clients to receive notifications.

Introduction

Notifying interested parties of changes to data is a very common requirement under distributed computing. A stock ticker program needs to notify clients with a change in stock price; a computer monitoring program needs to inform the administrators of the status of the system; a virus detection program needs to warn the computer user if a virus is detected; a medical monitoring program needs to page a doctor if a patient requires immediate attention, ...

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