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Chapter 5. Reusing Code > CFX Custom Tags

CFX Custom Tags

ColdFusion Extensions (CFX) are ColdFusion custom tags that are written in Java or C++. Unlike CFML custom tags, CFX tags come in handy when you want to do something that isn’t possible with traditional CFML code.

A perfect (and understandable) example of the use of ColdFusion Extensions is a custom tag that generates thumbnails of images. Obviously, with traditional CFML, you have no way of modifying the source image and generating a new, smaller representation of that image. With CFX tags, however, you can harness the power of other, robust languages (such as Java or C++) to give your ColdFusion applications all the power of those languages as well.


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