> For the complete documentation index, see [llms.txt](https://docs.intrepidcs.com/neovi-api/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.intrepidcs.com/neovi-api/basic-operation-intrepidcs-api/using-the-intrepidcs-api-in-visual-c++-intrepidcs-api.md).

# Using the neoVI API in Visual C++ - neoVI API

### To use neoVI in Visual C++:

1. Start your new project and add the [`Dynamic link helper files`](https://cdn.intrepidcs.net/guides/neoVIDLL/_downloads/d313052951efba4e15421be3f8e35682/DynamicLinkHelpCP.zip) to your project.
2. Add a <mark style="color:blue;">`#include`</mark> “icsneo40DLLAPI.h” to your project

![Figure 1 - Link to the “icsnVC40.lib”](/files/vQZuO6xIhpx4NqEXcpT0)

3\. Use the Functions “LoadDLLAPI” to load the functions and “UnloadDLLAPI” to unload the functions. Examples are below.

```cpp
 HINSTANCE hDLL;

 //-----Load the DLL
 if(!LoadDLLAPI(hDLL))
 {
 //problem, close the application

 printf("Problem loading Library\r\nMake sure icsneo40.dll is installed and accessable\r\nPress any key to Exit");

 }

 //-----Unload the DLL

 UnloadDLLAPI(hDLL);
```

4\. Finally, call the methods as defined in the [Basic Operation](/neovi-api/basic-operation-intrepidcs-api.md) document.

A Visual C++ example (Figure 1) is included to show how the API all works together. The example files are included in the following file: [`VCNewneoVI.zip`](https://cdn.intrepidcs.net/guides/neoVIDLL/_downloads/e0d42789bd4fbf6614f586c9bbb721da/VCNewneoVI.zip)

The example shows how to open and close communication to the driver, send messages and read messages on the networks.

![Figure 1 - The Visual C++ Example.](/files/Lc9IHKDtE3ZlZNS5qvXQ)