Active Template Library

Active Template Library

The Active Template Library (ATL) is a set of template-based C++ classes developed by Microsoft that simplify the programming of Component Object Model (COM) objects. The COM support in Microsoft Visual C++ allows developers to create a variety of COM objects, OLE Automation servers, and ActiveX controls. [cite book
title = ATL COM
edition = 1st edition
chapter = ATL and COM
pages = pg. 6
last = Grimes
first = Richard
year = 1998
publisher = Wrox Press
id = ISBN 1-861002-4-91
] [cite book
title = Beginning ATL 3 COM Programming
edition = 1st edition
chapter = Building and calling a COM object using ATL
pages = pg. 63
last = Grimes
first = Richard
year = 1999
publisher = Wrox Press
id = ISBN 978-1861001207
] Patterned after the Standard Template Library (STL), ATL includes an object wizard that sets up primary structure of the objects very quickly with a minimum of hand coding.

Controls for the Internet market could have been made with the Microsoft Foundation Classes, but this market requires controls to be small and compact for downloading over the network from Web servers. MFC applications tend to be large and require support DLLs. [cite book
title = Visual C++ 6 Unleashed
edition = 1st edition
chapter = Active Documents
pages = pg. 733
last = Williams
first = Mickey
year = 2000
publisher = Sams
id = ISBN 978-0-672-31241-0
] ATL allows creating smaller controls without support DLLs, so ATL is in a sense a lightweight alternative to MFC for the COM control environment.

A common use of ATL in ASP (Active Server Pages) is to construct objects that can be called from a script. Whilst limited in certain respects, VBScript is able to call C++ Windows code contained in a COM object.

See also

*ATL Server
*Component Object Model (COM)
*Microsoft Foundation Classes (MFC)
*OLE Automation
*Standard Template Library (STL)
*Windows Template Library (WTL)
*Microsoft Platform SDK


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  • Active Template Library — Pour les articles homonymes, voir ATL. L Active Template Library (ATL) signifie en français bibliothèque de modèles actifs. L ATL est une bibliothèque de classes C++ développée par Microsoft qui simplifie la programmation des composants logiciels …   Wikipédia en Français

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