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Documentation for ActiveX core technology resides at The Open Group and may be read for free. [15] Despite Microsoft's previous efforts to make ActiveX cross-platform, most ActiveX controls would not and will not work on all platforms, so using ActiveX controls to implement essential functionality of a web page restricts its usefulness.
OLE custom controls are usually shipped in the form of a dynamic link library with the .ocx extension. In 1996 all interfaces for controls (except IUnknown) were made optional to keep the file size of controls down, so they would download faster; these were then called ActiveX Controls.
Later versions of Internet Explorer prompt the user before installing an ActiveX control, allowing them to block installation. As a level of protection, an ActiveX control is signed with a digital signature to guarantee authenticity. It is also possible to disable ActiveX controls altogether, or to allow only a selected few.
The COM support in Microsoft Visual C++ allows developers to create a variety of COM objects, OLE Automation servers, and ActiveX controls. [1] [2] ATL includes an object wizard that sets up primary structure of the objects quickly with a minimum of hand coding. On the COM client side ATL provides smart pointers that deal with COM reference ...
Active Scripting (formerly known as ActiveX Scripting) is the technology used in Windows to implement component-based scripting support. It is based on OLE Automation (part of COM ) and allows installation of additional scripting engines in the form of COM modules.
ActiveX was based on a number of technologies Microsoft had already developed for Windows. ActiveX controls were OLE based controls that could be embedded in web pages, applications, and on the desktop. ActiveX became strongly criticized for security problems, and Microsoft later abandoned further development in favor of the .NET Framework.
Developers can choose to use a file extension that describes the content of the file such as .ocx for ActiveX controls and .drv for a legacy (16-bit) device driver. A DLL that contains only resources can be called a resource DLL. Examples include the icon library, sometimes having extension .icl, and font library having extensions .fon and .fot ...
This utility displays a list of all installed BHOs, browser extensions and ActiveX controls, and allows the user to enable or disable them at will. There are also free tools (such as BHODemon) that list installed BHOs and allow the user to disable malicious extensions.