如何创建和编译动态链接库并且在另一应用程序中调用它。

使用VS2019,大概步骤

• Create a DLL project in Visual Studio.

• Add exported functions and variables to the DLL.

• Create a console app project in Visual Studio.

• Use the functions and variables imported from the DLL in the console app.

• Run the completed app.

参考：

Walkthrough: Create and use your own Dynamic Link Library (C++) | Microsoft Docs