I want to use an API function, how do I do that?

It's a collection of functions.

You can use it the same way you use sprint("123");Again, this is the function.

As long as you have a header file that contains it, you can use it

A must-add! Otherwise, an error will be reported! ~

After adding the header file, the system will automatically find it in the system directory.

Install an MSDN and press F1 to find out.

The Win32 application project established by VC6 is commonly referred to as the SDK project. The project itself is written in api. He doesn't use the MFC library, but of course he can use it.

In general, few people write applications in SDKs, and it is generally more convenient to write games with this.

As for the examples, I won't write it out.,That thing ** is too much.,You can use the API where you need it.,The method is no different from general writing.。

Add: You must add the header file where it is located, otherwise you won't be able to compile.

Supplement: The general API can be found through MSDN, for example, if I want to find a window of other programs, I can use the API of findwindow, and his API can be understood in English Find + Window As for you only know the function and find the API only through the combination of English, if not, you can only check it on the Internet, and usually you can find it on the Internet. For example, some APIs are very irregular.

For example, the API of shell notifyicon is basically not regular, and it is difficult to think of it directly, so it can only be checked online.

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 above content refers to Encyclopedia—API

As mentioned upstairs, there are actually many forms of APIs, including some web APIs, such as Google's series of map extensions.

The Short Friends API (SMS Application Programming Interface) is a set of definitions, programs, and protocols that communicate with each other through the API interface. 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 reduce programming tasks by reducing the need to write useless programs.

The API is also a kind of middleware that provides data sharing for a variety of different platforms.