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Note
The Microsoft Foundation Classes (MFC) library continues to be supported. However, we're no longer adding features or updating the documentation.
In Visual Studio you can create ActiveX controls using MFC or ATL.
Important
ActiveX is a legacy technology that should not be used for new development. Many capabilities of ActiveX controls can be performed in a simpler and much more secure way with modern technologies such as HTML5 and JavaScript, modern browser extensions, or WebAssembly modules. For more information, see A break from the past, part 2: Saying goodbye to ActiveX, VBScript, attachEvent and Native Messaging and Microsoft Edge extensions and WebAssembly.