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Pro Internet Explorer 8 & 9 Development: Developing Powerful Applications for The Next Generation of IE by Matthew Crowley

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Chapter 13. Building In-Process Extensions with Browser Helper Objects

Most IE extensibility points are, in many ways, separated from the steps and transactions that take place behind the scenes of a page load or the display of the browser frame. Most extensions are used to control a piece of the browser's UI, whether it be a part of a page or a part of the browser window itself. Browser Helper objects (BHOs) fill in the missing piece of this story: they allow developers to access the events called and actions taken by IE silently. Much like a Windows service, these extensions sit in the background and perform tasks without having to interact with a user directly.

In this chapter, I discuss how you can build your own BHO and use this extension ...

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