# 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”](https://240838104-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FabyA6gDDBQ0CNbxlveQb%2Fuploads%2Fgit-blob-78069b34f4d3efb3b71c8d73d802e0691cdddd98%2FVCHelperAdd.jpg?alt=media)

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](https://docs.intrepidcs.com/neovi-api/basic-operation-intrepidcs-api) 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.](https://240838104-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FabyA6gDDBQ0CNbxlveQb%2Fuploads%2Fgit-blob-d90ad8b12444cca6adb036d8b1f69777a9862664%2FVCExample.gif?alt=media)


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