# GetVCAN3Settings Method - neoVI API

This method reads the configuration settings from a ValueCAN3 device.

{% tabs %}
{% tab title="C/C++ Declare" %}

```cpp
int _stdcall icsneoGetVCAN3Settings(void * hObject, SVCAN3Settings *pSettings, int iNumBytes);
```

{% endtab %}

{% tab title="Visual Basic .NET Declare" %}

```vbnet
Public Declare Function icsneoGetVCAN3Settings Lib “icsneo40.dll” (ByVal hObject As IntPtr, ByRef pSettings As SVCAN3Settings, ByVal iNumBytes As Int32) As Int32
```

{% endtab %}

{% tab title="C# Declare" %}

```csharp
[DllImport(“icsneo40.dll”)] public static extern Int32 icsneoGetVCAN3Settings(IntPtr hObject, ref SVCAN3Settings pSettings, Int32 iNumBytes);
```

{% endtab %}
{% endtabs %}

**Parameters**

hObject

\[in] Specifies the driver object created by [OpenNeoDevice](/neovi-api/win32-api-overview-intrepidcs-api/basic-functions-overview-intrepidcs-api/openneodevice-method-intrepidcs-api.md).

pSettings

\[out] Pointer to a [SVCAN3Settings](/neovi-api/win32-api-overview-intrepidcs-api/structures-types-and-defines-overview-intrepidcs-api/setting-structures-overview-intrepidcs-api/svcan3settings-structure.md) structure.

iNumBytes

\[in] This value is always the size, in bytes, of the [SVCAN3Settings](/neovi-api/win32-api-overview-intrepidcs-api/structures-types-and-defines-overview-intrepidcs-api/setting-structures-overview-intrepidcs-api/svcan3settings-structure.md) structure.

**Return Values**

Returns 1 if successful, 0 if an error occurred. [GetLastAPIError](/neovi-api/win32-api-overview-intrepidcs-api/error-functions-overview-intrepidcs-api/getlastapierror-method-intrepidcs-api.md) must be called to obtain the specific error. The errors that can be generated by this function are:

NEOVI\_ERROR\_DLL\_NEOVI\_NO\_RESPONSE = 75

**Remarks**

After getting the current settings, you may change the parameters defined in the [SVCAN3Settings](/neovi-api/win32-api-overview-intrepidcs-api/structures-types-and-defines-overview-intrepidcs-api/setting-structures-overview-intrepidcs-api/svcan3settings-structure.md) structure and write the settings back to the ValueCAN3 using [SetVCAN3Settings](/neovi-api/win32-api-overview-intrepidcs-api/device-settings-functions-overview-intrepidcs-api/valuecan3-intrepidcs-api/setvcan3settings-method-intrepidcs-api.md).

### Examples

{% tabs %}
{% tab title="C/C++ Example" %}

```cpp
SVCAN3Settings VcanReadSettings;
int iNumberOfBytes;
int iResult;

//Get the settings
iNumberOfBytes=sizeof(VcanReadSettings );
iResult = icsneoGetVCAN3Settings(m_hObject, &VcanReadSettings , iNumberOfBytes);
if(iResult == 0)
{
    MessageBox::Show("Problem reading VCAN configuration");
    return;
}
```

{% endtab %}

{% tab title="C# Example" %}

```csharp
//Declared at form level and previously open with a call to OpenNeoDevice
IntPtr m_hObject; //handle for device,
SVCAN3Settings VcanReadSettings = new SVCAN3Settings();
int iNumberOfBytes;
int iResult;

//Get the settings
iNumberOfBytes = System.Runtime.InteropServices.Marshal.SizeOf(VcanReadSettings);
iResult = icsNeoDll.icsneoGetVCAN3Settings(m_hObject,ref VcanReadSettings , iNumberOfBytes);
if (iResult == 0)
{
    MessageBox.Show("Problem reading VCAN configuration");
    return;
}
```

{% endtab %}

{% tab title="Visual Basic .NET Example" %}

```vbnet
Private m_hObject As IntPtr '// Declared at form level and previously open with a call to OpenNeoDevice

Dim VcanReadSettings As SVCAN3Settings
Dim iNumberOfBytes As Integer
Dim iResult As Integer

'//Get the settings
iNumberOfBytes = System.Runtime.InteropServices.Marshal.SizeOf(VcanReadSettings)
iResult = icsneoGetVCAN3Settings(m_hObject, VcanReadSettings , iNumberOfBytes)
If iResult = 0 Then
    MsgBox("Problem reading VCAN configuration")
    Exit Sub
End If
```

{% endtab %}
{% endtabs %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.intrepidcs.com/neovi-api/win32-api-overview-intrepidcs-api/device-settings-functions-overview-intrepidcs-api/valuecan3-intrepidcs-api/getvcan3settings-method-intrepidcs-api.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.