# SetupDiGetClassDevs

```csharp
[DllImport("setupapi.dll", SetLastError = true, CharSet = CharSet.Unicode)]
public static extern IntPtr SetupDiGetClassDevs(
   ref Guid ClassGuid,
   string Enumerator,
   IntPtr hwndParent,
   uint Flags
);
```

Microsoft documentation: [Link](https://docs.microsoft.com/en-us/windows/win32/api/setupapi/nf-setupapi-setupdigetclassdevsw)