The. NET Framework reusable software is not a new concept. For eight of years, people have been using various forms of Component object models (COM). It turns out that it is the most successful reusable software model. COM introduces the concept of "component"-a reusable block of code that can be combined to combine the functions of multiple independent functions to extend to applications such as Microsoft
". NET support COM? "
"How do COM + and MTS exist on. NET?" "
". What is the difference between a net component and a COM component? "
COM + is still present in. NET, and if the application does need to use COM + and MTS features, then you can choose the appropriate techn
The COM component has three basic interface classes: iunknown, iclassfactory, and idispatch.The COM specification specifies that all components and interfaces must be inherited from iunknown. iunknown contains three functions: QueryInterface, addref, and release. These three functions are extremely important, and their order cannot be changed. QueryInterface is used to query other interfaces implemented by
Recently, this registry-free COM technology was used in our work, that is, free registration of COM.
The COM component we provide will be used by multiple products, and these products may:
Installed on the same machine
The COM component used is of different versions.
In this way, if you use a common registered
The T-SQL programming language of SQL Server is powerful in data storage and recovery, but is less functional in terms of interaction with systems outside of the SQL Server database. However, we can overcome this limitation with SQL Server's built-in COM automation environment, which enables users to automate COM objects in stored procedures.
With 7 extended stored procedures in SQL Server 7.0 and SQL Serve
in the "Big talk design mode C + + version-abstract Factory mode", we save the world attempted, leaving little regret, in this article we will give a solution--com component technology, but also pull the factory model in the application of COM component technology.The root cause of the Factory mode violation of the open-closed principle is that the object generation cannot be controlled by the data outside
What kind of software products do users need? This is a multiple-choice, but efficient, robust is sure to be selected. What does a software developer do to satisfy a user's needs? You must ensure that the upgrade application does not break backward compatibility with previous versions. You must extend the system service without relying on a specific operating system. Object-oriented programming is clearly a revolutionary change. Using object-oriented design method, we can easily abstract the pro
People who are familiar with object-oriented programming and network programming must not be unfamiliar with the concepts of ActiveX, OLE, and com/dcom, but what is the relationship between them is rather vague for many people.Between the specific descriptions of their relationships, we will first identify the difference between the component (Component) and the object. A component is a reusable module that is a business object (Rules object) that con
PHP can operate COM and DCOM object 1 under the Win32 platform. I created a DLL to compute something. Is there any way to run this DLL in PHP? 2. What does ' unsupported variant type:xxxx (0XXXXX) mean? 3. Is it possible to manipulate visual objects in PHP? 4. Can I put COM objects into session? 5. How do I capture COM errors? 6. How do I generate DLL files in PH
People familiar with object-oriented programming and network programming must be familiarActiveX,OleAndCOM/DCOMThese concepts are not unfamiliar, but many people are still vague about the relationship between them.
In the relationship between them, we should first clarify the components (Component) And object (Object. A component is a reusable module that consists of a set of processing processes, data encapsulation, and user interfaces (Rules object). The component looks like an object, but d
What is com?The so-called COM (componet object model, Component Object Model) is a specification that describes how to establish dynamically changing components. This SPECIFICATION provides a way to ensure interoperability, some binary and network standards that customers and components should follow. This standard allows communication between any two components without considering whether the operating env
What is com?The so-called COM (componet object model, Component Object Model) is a specification that describes how to establish dynamically changing components. This SPECIFICATION provides a way to ensure interoperability, some binary and network standards that customers and components should follow. This standard allows communication between any two components without considering whether the operating env
Second, VC for COM programming, you must master what COM theory knowledge
I have seen a lot of people learn com, after reading a book on the principle of COM more understand, COM also so much, but just do not know how to program, I have this situation, I have experienced suc
In my daily work, I have seen many COM codes written by different developers. I was amazed by the many creative ways of working with COM, and some of the clever code that made COM work might not even have occurred to Microsoft. Also, seeing some mistakes repeated again and again made me frustrated. Many of these errors are related to thread and security, and this
Use Visual C #. Net to generate an office com external program
For the Microsoft Visual Basic. Net version in this article, see 302896. For Microsoft Visual Basic 6.0 in this article, see 238228. For Microsoft Visual C ++ 6.0 in this article, see section 230689.
Content of this task
Summary
Idtexensibility2 Interface
Onconnection
Ondisconnection
Onaddinsupdate
Onstartupcomplete and onbeginshutdown
COM programming
In-process COM servers (in-process COM server)
In-process COM server (in-process COM server) has been introduced briefly before, here, only some need to understand, understand the knowledge points, and then programming may be better; in-process servers are
This time I was thinking about how to use a small program with COM components. I suddenly remembered why I used com during the last interview, instead of using a common DLL? After checking it on Google, many people also asked the same question: using COM to write a program is more troublesome than using a common DLL, but it brings a lot of benefits, especially wh
COM (Component Object Model, Component Object Model) is a binary and network standard created by Microsoft. It is also a component standard that Microsoft has vigorously promoted and widely recognized. In the com standard, the COM object is well encapsulated, and the customer cannot access the implementation details of the object. The only access channel provided
Cool code: eight lessons learned from the com experience released on: 5/20/2004 | updated on: 5/20/2004
Jeff prosise
In my daily work, I have seen a lot of COM code written by Different developers. I was surprised by many creative ways of working with COM. Some clever code that made com work may not even come to Micros
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.