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Original: Http://www.codeproject.com/Articles/633/Introduction-to-COM-What-It-Is-and-How-to-Use-ItThe purpose of this article is to provide programming guidance to programmers who have just contacted COM and to help them understand the basic concepts of COM. The content includes a description of the COM specification ,

COM objects are encapsulated entities that provide services to users. This should be similar to the Class Object in C ++. But sometimes the COM object is treated as the class that provides services. The COM Object also encapsulates the data and provides interfaces. But there are some differences with the class. The data in the class can be declared as public, and

This article provides a programming guide to the programmers who just contacted COM, explaining the inside of the COM server and how to write your own interface in C + +. Following the introduction of previous COM programming, this article discusses the content of COM servers, explains the steps and knowledge needed t

Difference Author: Sunwen translation All the best programmers do their best to make their written programs more reusable, because it allows you to quickly write more robust and scalable programs. There are two choices to make code reusable: 1. White box: The simplest one is to copy your program to another file. 2. Black box: It involves connecting a compiled piece of the program. So the compiled black box class library that the client can invoke is called a component. . NET also provides dev

Part of this section requires the reader to be familiar with the message invocation principle of COM, and the principle of this is as shown in Mr. Yang's column. Previous content: COM Server--> COM client ... COM server-->. NET Client 1, P/invoke 2, COM Interop (conten

This digest from: http://www.job168.com/info/read_100394.htmlMany of Microsoft's technologies, such as OLE, ActiveX, and DirectX, are built on COM technology. Microsoft itself also uses a lot of COM components to customize their applications and operating systems. So, what is COM?The so-called

1, the object-oriented system of the three most basic characteristics Encapsulation, polymorphism, reusability. 2, COM characteristics of the overview The encapsulation characteristics of COM objects are very thorough, all object state information must be accessible through an interface, while COM polymorphism is fully represented by the interface, and

Yesterday saw the first chapter of "com Essence", "com is a better C + +", feel it is necessary to do some notes, so organized into this article, I believe you deserve to have.The main content of this article is: A class faststring that implements the fast lookup function, which slowly evolves into a COM component after a small requirement. Class Faststring imple

1, the implementation of COM and operating system platform is closely related Because COM originated in the Microsoft Windows platform, the COM implementation part (that is, the COM library) uses some of the features of the Windows system directly, such as the system registry, the dynamic Connection library, and so on

Delphi object-oriented Learning Article 7: COMAuthor: banhamtHttp://www.cnpack.org(Please indicate the source and keep it complete)In the previous article, we introduced interfaces. If you have never touched the COM object, you will find the interface really troublesome. You may have the idea of "It is better to define a class directly for convenience.Indeed, interfaces without com encapsulation are really

All outstanding programmers will do their best to make their programs more reusable, because it allows you to quickly write more robust and scalable programs. There are two options for code reuse: 1. white box: the simplest one is to copy your program to another file.2. Black Box: it includes connecting compiled program slices. Therefore, the compiled black box class library that can be called by the client is called a component. . Net also provides developers with methods similar to

All outstanding programmers will do their best to make their programs more reusable, because it allows you to quickly write more robust and scalable programs. There are two options for code reuse: 1. white box: the simplest one is to copy your program to another file.2. Black Box: it includes connecting compiled program slices. Therefore, the compiled black box class library that can be called by the client is called a component. . Net also provides developers with methods similar to