---
url: >-
  /flow/developer-guide/developing-with-flowapi/functions/general/flo_aboutapiex.md
---

# Flo_AboutAPIEx

## Declaration

C# public static extern int Flo_AboutAPIEx(out string Description, int length);

**Delphi** function Flo_AboutAPIEx(const aBuffer: PChar; const aBufferLength: Integer): Integer; stdcall;

### Example

```csharp
try
{
string APIDetails = new string[256];
Boolean result =FlowAPI.Flo_AboutAPIEx(out APIDetails, 256);
if (result) MessageBox.Show(APIDetails); else MessageBox.Show("Error getting API Version");
}
catch (Exception ex)
{
MessageBox.Show("Exception getting API version - " + ex.Message);
}
```

```pascal
Delphi
var buffer: array[0..255] of char;
try
Result := Flo_AboutAPIEx(pcAPIDetails, 256);
if Result then
showmessage(pcAPIDetails)
else
showmessage('Error getting API Version');
except
on e : exception do
showmessage('Exception getting API Version - ' + e.Message);
end;
```

## Description

Retrieves a text string containing the version of the FlowAPI.