-
The so-called API was originally written for C and C++ programmers. APIs, to put it mildly, are functions that are contained in a dynamic connection library file with an additional name called a dll. By standard definition, an API is a 32-bit application programming interface for Windows, a complex set of functions, messages, and structures that enable programmers to program applications that run on Windows 95 and Windows NT operating systems in different types of programming languages.
Suffice it to say, if you've ever learned VC, then the API isn't a problem for you. But if you haven't learned VC, or if you're not familiar with the architecture of Windows 95, then it's fair to say that learning the API will be a hard job.
If you open the Windows System folder, you can see that there are a lot of files with the name dll attached to it. There is not just one, dozens, or even hundreds of API functions contained in a DLL. Can we all master it?
It is impossible to grasp if it is negative. But in fact, we really don't need to master everything, as long as we focus on mastering the API functions that come with the WinDos system itself. However, it is also necessary to discard functions that duplicate the functions of VB itself.
For example, the etattr command of vb can obtain the file attributes, and the setattr can set the file attributes. There are also corresponding functions for APIs.
GetFileAttributes and SetFileAttributes, both have similar performance. If you count it like this, there is only one left. Yes, no less.
But, I can tell you that if you are familiar with 100, you will be at least twice as good at programming as you are today. Although people say that VB and Windows have a close relationship, I think that the API is closer.
windows。If you learn the API, the first thing you will learn is an understanding of Windows architecture. This harvest is not easy to come by.
-
The API is "in English" Air Pollution Index"The abbreviation means Air Pollution Index. The API index is converted from the daily monitoring of air pollutants according to the relevant national technical regulations, which shows the air environment in a simpler and more intuitive way.
-
APIs are application programming interfaces.
An API is a set of predefined interfaces (e.g., functions, HTTP interfaces), or conventions for connecting different components of a software system. A set of routines that can be accessed by programs and developers based on a piece of software or hardware without having to access the source code or understand the details of the inner workings.
Classification:
API functions are included in the dynamic connection library file in the Windows system directory. The Windows API is a set of predefined Windows functions that control the appearance and behavior of various parts of Windows.
Each action of the user triggers the running of one or several functions to tell Windows what is going on. This is somewhat like the natural ** of Windows. Other languages simply provide an automatic and easier way to access the API.
When a button on the form is clicked, Windows sends a message to the form, and VB takes the call and analyzes it to generate a specific event.
-
The SMS API (SMS Application Programming Interface) is a collection of definitions, programs, and protocols that enable computer software to communicate with each other through API interfaces. One of the main functions of the API is to provide a common feature set. Programmers can develop applications by using API functions, which can ease programming tasks by avoiding writing useless programs.
The API is also a kind of middleware that provides data sharing for a variety of different platforms.
-
Some companies encapsulate the program, and you only need to call the API to you when you use it. For example, input and output, functional functions,
-
What does it mean to encounter an API interface when you are a beginner in programming?
-
API: A collection of definitions, programs, and protocols.
API is the abbreviation of American Petroleum Institute. Founded in 1919, API was the first national business association in the United States and one of the first and most successful standard-setting chambers in the world. (**: >>>More
int hand
hand=handle(this,true) >>>More
Qian itself is one of the eight trigrams, representing the sky, and in the old days it also referred to men, often combined with the word "kun" to form "Qiankun", symbolizing heaven and earth, yin and yang, etc. >>>More
Yes, it's 915 dec. 921 dec. 177
Communicate with the other person on your own. >>>More
This is a flange specification, the BOP product is manufactured according to the API 16A standard, but the upper and lower flanges are manufactured according to the API 6A, 9 -5,000 6B means the diameter of 9 inches (229mm), the pressure rating is 5000 psi (API 6A 6B type flange, the octagonal gasket groove specification at the two hair flange junctions is R50 (API 6A standard gasket ring groove). or refer to the ISO10423 standard. >>>More