Create the application as shown in the figure:?

Get API Key after submission, and the running results are as follows:

Extended data:

? API (Application Programming Interface) is some predefined functions, whose purpose is to provide applications and developers with the ability to access a set of routines based on certain software or hardware, without accessing the source code or knowing the details of the internal working mechanism. ?

The API function is contained in the dynamic link library file under the Windows system directory. Windows API is a set of predefined Windows functions, which are used to control the appearance and behavior of various Windows components.

References:

Baidu encyclopedia -api interface