You can obtain a trial version of this version at http://www.xxcopy
.com/index.htm#testdrive.
Working with Shell Extensions Using ShellExView
Anyone who uses Windows has used a shell extension, but it??™s likely that you don??™t know anything
about it. A shell extension is a COM object that extends Windows in some way. For example, when
you install WinZIP on a system, it installs several shell extensions. Clicking a ZIP file produces a
new context menu that contains options for working with shell extensions. In addition, you??™ll see
new WinZIP options for general files and even as part of the Send To menu. In most cases, these
shell extensions behave properly and add to the functionality of the system.
However, every time you add something new to the operating system, especially a feature that??™s
constantly monitoring what you do in order to display a context menu, you incur a performance
penalty. When the addition provides something valuable, the performance penalty is usually worthwhile.
Once you add enough items, though, you begin to see a significant performance penalty and
have no idea of how to fix it. Unfortunately with shell extensions, Windows doesn??™t provide any
means of fixing the problem and manually patching the registry is certain to cause problems.
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