Active Template Library

What Does Active Template Library Mean?

Active Template Library is a group of Microsoft C++ template classes (program routines) that are specifically designed to simplify Component Object Model (COM) and ActiveX development and coding. Responding to market demand for compact and easily downloadable objects, Microsoft introduced ATL as a lightweight technology to complement Microsoft Foundation Classes (MFC).

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ATL is formerly known as ActiveX Template Library (ATL).

Techopedia Explains Active Template Library

Based on the Standard Template Library (STL), ATL extends the Visual Studio development environment with wizards used for COM object automation. ATL facilitates the programming of COM objects for script invocation by Active Server Pages (ASP).

ATL may be used to create a variety of objects, including dialog boxes and Internet Explorer controls. ATL supports key COM features, such as ActiveX controls, dual interfaces and connection points.

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Margaret is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages.