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QueryInterface
In the computer programming of applications on Microsoft_Windows through the Windows_API, the IUnknown interface is the fundamental interface Component Object Model (COM). The COM specification mandates that COM objects must implement this interface. Furthermore, every other COM interface must be derived from IUnknown. IUnknown exposes two essential features of all COM objects: object lifetime management through reference counting, and access to object functionality through other interfaces. As well as being a foundational part of Microsoft's COM and DCOM models of objects, there are implementations of the same interface on other platforms -either because the other platforms implement some form of COM-compatibility, or because the design was considered effective. An IUnknown (or IUnknown-derived) interface generally consists of a pointer to a virtual method table that contains a list of pointers to the functions that implement the functions declared in the interface, in the order t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer Programming
Computer programming or coding is the composition of sequences of instructions, called computer program, programs, that computers can follow to perform tasks. It involves designing and implementing algorithms, step-by-step specifications of procedures, by writing source code, code in one or more programming languages. Programmers typically use high-level programming languages that are more easily intelligible to humans than machine code, which is directly executed by the central processing unit. Proficient programming usually requires expertise in several different subjects, including knowledge of the Domain (software engineering), application domain, details of programming languages and generic code library (computing), libraries, specialized algorithms, and Logic#Formal logic, formal logic. Auxiliary tasks accompanying and related to programming include Requirements analysis, analyzing requirements, Software testing, testing, debugging (investigating and fixing problems), imple ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Interface ID
Component Object Model (COM) is a Application Binary Interface, binary-interface technology for software components from Microsoft that enables using object (computer science), objects in a language-neutral way between different programming languages, programming contexts, Process (computing), processes and computer, machines. COM is the basis for other Microsoft domain-specific component technologies including Object Linking and Embedding, OLE, OLE Automation, ActiveX, #COM+, COM+, and Distributed Component Object Model, DCOM as well as implementations such as DirectX, Windows shell, User-Mode Driver Framework, UMDF, Windows Runtime, and Browser Helper Object. COM enables object use with only knowing its interface; not its internal implementation. The component implementer defines interface (object-oriented programming), interfaces that are separate from the implementation. Support for multiple programming contexts is handled by relying on the object for aspects that would be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Windows Runtime
Windows Runtime (WinRT) is a platform-agnostic component and application architecture first introduced in Windows 8 and Windows Server 2012 in 2012. It is implemented in C++ and officially supports development in C++ (via C++/WinRT, C++/CX or WRL), Rust/WinRT, Python/WinRT, JavaScript-TypeScript, and the managed code languages C# and Visual Basic (.NET) (VB.NET). WinRT is not a runtime in a traditional sense but rather a language-independent application binary interface based on COM to allow object-oriented APIs to be consumed from multiple languages, with services usually provided by a full-blown runtime, such as type activation. That is, WinRT is an "API delivery system". Apps using the Windows Runtime may run inside a sandboxed environment to allow greater security and stability and can natively support both x86 and ARM. WinRT components are designed with interoperability among multiple languages and APIs in mind, including native, managed and scripting languages. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IInspectable
Windows Runtime (WinRT) is a platform-agnostic component and application architecture first introduced in Windows 8 and Windows Server 2012 in 2012. It is implemented in C++ and officially supports development in C++ (via C++/WinRT, C++/CX or WRL), Rust/WinRT, Python/WinRT, JavaScript-TypeScript, and the managed code languages C# and Visual Basic (.NET) (VB.NET). WinRT is not a runtime in a traditional sense but rather a language-independent application binary interface based on COM to allow object-oriented APIs to be consumed from multiple languages, with services usually provided by a full-blown runtime, such as type activation. That is, WinRT is an "API delivery system". Apps using the Windows Runtime may run inside a sandboxed environment to allow greater security and stability and can natively support both x86 and ARM. WinRT components are designed with interoperability among multiple languages and APIs in mind, including native, managed and scripting languages. Built ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Browser Helper Object
A Browser Helper Object (BHO) is a DLL module designed as a plugin for the Microsoft Internet Explorer web browser to provide added functionality. BHOs were introduced in October 1997 with the release of version 4 of Internet Explorer. Most BHOs are loaded once by each new instance of Internet Explorer. However, in the case of Windows Explorer, a new instance is launched for each window. BHOs are still supported as of Windows 10, through Internet Explorer 11, while BHOs are not supported in Microsoft Edge. Implementation Each time a new instance of Internet Explorer starts, it checks the Windows Registry for the key ''HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects''. If Internet Explorer finds this key in the registry, it looks for a CLSID key listed below the key. The CLSID keys under Browser Helper Objects tell the browser which BHOs to load. Removing the registry key prevents the BHO from being loaded. For each CLSID that is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IObjectWithSite
A Browser Helper Object (BHO) is a Library (computer science), DLL Module (programming), module designed as a Plug-in (computing), plugin for the Microsoft Internet Explorer web browser to provide added functionality. BHOs were introduced in October 1997 with the release of Internet Explorer 4, version 4 of Internet Explorer. Most BHOs are loaded once by each new instance of Internet Explorer. However, in the case of Windows Explorer, a new instance is launched for each window. BHOs are still supported as of Windows 10, through Internet Explorer 11, while BHOs are not supported in Microsoft Edge (series of web browsers), Microsoft Edge. Implementation Each time a new instance of Internet Explorer starts, it checks the Windows Registry for the key ''HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects''. If Internet Explorer finds this key in the registry, it looks for a Universally unique identifier#In COM, CLSID key listed below the key. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
OLE Automation
In Microsoft Windows applications programming, OLE Automation (later renamed to simply Automation) is an inter-process communication mechanism created by Microsoft. It is based on a subset of Component Object Model (COM) that was intended for use by scripting languages – originally Visual Basic – but now is used by several languages on Windows. All automation objects are required to implement the IDispatch interface. It provides an infrastructure whereby applications called ''automation controllers'' can access and manipulate (i.e. set properties of or call methods on) shared ''automation objects'' that are exported by other applications. It supersedes Dynamic Data Exchange (DDE), an older mechanism for applications to control one another. As with DDE, in OLE Automation the automation controller is the "client" and the application exporting the automation objects is the "server". Contrary to its name, automation objects do not necessarily use Microsoft OLE, although ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IDispatch
IDispatch is the interface that exposes the OLE Automation protocol. Extending IUnknown, it is one of the standard interfaces that can be exposed by COM objects. COM distinguishes between three interface types: ''custom'' that are VTABLE-based IUnknown interfaces, ''dispatch'' that are IDispatch interfaces supporting introspection, and ''dual'' interfaces supporting both types. The Automation (IDispatch) interface allows a client application to find out what properties and methods are supported by an object at run-time, i.e. implements the concept of RTTI. It also provides the information necessary to invoke these properties and methods. Client applications do not need to be aware of the object members when they are compiled. This allows COM and ActiveX objects to be called by scripting programs platforms such as the ASP server and JavaScript on Internet Explorer, where calling conventions were not known at the time IIS or IE were built. By contrast, a simple object library is c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Object Linking And Embedding
Object Linking and Embedding (OLE) is a proprietary technology developed by Microsoft that allows embedding and linking to documents and other objects. For developers, it brought OLE Control Extension (OCX), a way to develop and use custom user interface elements. On a technical level, an OLE object is any object that implements the IOleObject interface, possibly along with a wide range of other interfaces, depending on the object's needs. Overview OLE allows an editing application to export part of a document to another editing application and then import it with additional content. For example, a desktop publishing system might send some text to a word processor or a picture to a bitmap editor using OLE. The main benefit of OLE is to add different kinds of data to a document from different applications, like a text editor and an image editor. This creates a Compound File Binary Format document and a master file to which the document makes reference. Changes to data in the m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IOleObject
Object Linking and Embedding (OLE) is a proprietary technology developed by Microsoft that allows embedding and linking to documents and other objects. For developers, it brought OLE Control Extension (OCX), a way to develop and use custom user interface elements. On a technical level, an OLE object is any object that implements the IOleObject interface, possibly along with a wide range of other interfaces, depending on the object's needs. Overview OLE allows an editing application to export part of a document to another editing application and then import it with additional content. For example, a desktop publishing system might send some text to a word processor or a picture to a bitmap editor using OLE. The main benefit of OLE is to add different kinds of data to a document from different applications, like a text editor and an image editor. This creates a Compound File Binary Format document and a master file to which the document makes reference. Changes to data in the maste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
XPCOM
Cross Platform Component Object Model (XPCOM) is a cross-platform component model from Mozilla. It is similar to Component Object Model (COM), Common Object Request Broker Architecture (CORBA) and system object model (SOM). It features multiple language bindings and interface description language (IDL) descriptions, which allow programmers to plug their custom functions into the framework and connect them with other components. The most notable use of XPCOM is within the Firefox web browser, where many internal components interact through XPCOM interfaces. Furthermore, Firefox used to allow add-ons extensive XPCOM access, but this was removed in 2017 and replaced with the less-permissive WebExtensions API. Two forks of Firefox still support XPCOM add-on capability: Pale Moon and Basilisk. Model XPCOM is one of the main things making the Mozilla application environment an actual framework. It is a development environment that provides the following features for the cross-plat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Core Foundation
Core Foundation (also called CF) is a C application programming interface (API) written by Apple Inc. for its operating systems, and is a mix of low-level routines and wrapper functions. Most Core Foundation routines follow a certain naming convention that deal with opaque objects, for example CFDictionaryRef for functions whose names begin with CFDictionary, and these objects are often reference counted (manually) through CFRetain and CFRelease. Internally, Core Foundation forms the base of the types in the Objective-C standard library and the Carbon API. The most prevalent use of Core Foundation is for passing its own primitive types for data, including raw bytes, Unicode strings, numbers, calendar dates, and UUIDs, as well as collections such as arrays, sets, and dictionaries, to numerous macOS C routines, primarily those that are GUI-related. At the operating system level Core Foundation also provides standardized application preferences management through CFProperty ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
