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Encyclopedia > OLE Automation

OLE Automation is a late-binding extension to COM and IUnknown. It consists mostly of IDispatch, type libraries, and a number of standard types (related to VARIANT). This made allowances for things like Active Scripting. Component Object Model (COM) is a Microsoft platform for software componentry introduced by Microsoft in 1993. ... The published COM specification mandates that COM objects must minimally implement the IUnknown interface. ... IDispatch is the interface that exposes the Automation protocol. ... Active Scripting (also known as ActiveX Scripting) is the technology used in Windows to implement component-based scripting support. ...


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OLE Automation for C++ programmers (4019 words)
OLE automation, being the object-oriented component of Visual Basic, Microsoft’s script language of choice, is something that programmers in MS-dominated environments will find increasingly hard to ignore.
For OLE automation this GUID is mostly an annoying irrelevancy, as the object name and the name of the program or library that services it is quite enough to identify it.
OLE uses the information in the type library to work out how to build the proxy, so if a method is not listed here, or is not declared as in the right way, then using it in a remote client will bring disaster.
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