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# WinUsb\_QueryDeviceInformation

### C# Signature:

```cs
[DllImport("winusb.dll", SetLastError=true)]
static extern Boolean WinUsb_QueryDeviceInformation(
     SafeFileHandle InterfaceHandle,
     UInt32 InformationType,
     ref UInt32 BufferLength,
     byte[] Buffer);
```

### VB Signature:

```cs
Declare Function WinUsb_QueryDeviceInformation Lib "winusb.dll" (TODO) As TODO
```

### User-Defined Types:

```cs
const ULONG DEVICE_SPEED = 1;
```

### Sample Code:

```cs
UInt32 bufferLength = 100;
byte[] buffer = new byte[bufferLength];
var success = WinUsb_QueryDeviceInformation(_winUsbHandle, DEVICE_SPEED, ref bufferLength, buffer);
```