C# Signature:

// devInst is an uint32 - this matters on 64-bit
[DllImport("setupapi.dll", SetLastError=true)]
static extern int CM_Get_DevNode_Status(ref UInt32 status, ref UInt32 probNum, UInt32 devInst, int flags);

VB Signature:

<DllImport("cfgmgr32.dll", SetLastError:=True, CharSet:=CharSet.Unicode)> _

    Private Shared Function CM_Get_DevNode_Status(ByRef status As ULong, ByRef probNum As ULong, ByVal devInst As IntPtr, ByVal Flag As Integer) As Integer
    End Function

User-Defined Types:

static readonly int CR_SUCCESS = 0x00000000;

Alternative Managed API:

Do you know one? Please contribute it!

Notes:

The return type is either int or uint.

Tips & Tricks:

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Sample Code:

If CM_Get_DevNode_Status(status, problem, DeviceInfoData.DevInst, 0) = CR_SUCCESS Then
        Dim sbDesc As New StringBuilder("")
        Dim MAX_LEN As Integer = 512
        Dim propRegDataType As Integer = 0
        sbDesc.Capacity = MAX_LEN
        Dim reqSize As Integer = 0
        SetupDiGetDeviceRegistryProperty(NewDeviceInfoSet, DeviceInfoData, DirectCast(SPDRP_FRIENDLYNAME, Integer), propRegDataType, sbDesc, MAX_LEN, reqSize)
        If sbDesc.ToString() = "" Then
            SetupDiGetDeviceRegistryProperty(NewDeviceInfoSet, DeviceInfoData, DirectCast(SPDRP_DEVICEDESC, Integer), propRegDataType, sbDesc, MAX_LEN, reqSize)
        End If
        If sbDesc.ToString() = "" Then
            sbDesc.Append("Unknown Description")
        End If
        Dim sbHWID As New StringBuilder("")

        sbHWID.Capacity = MAX_LEN
        SetupDiGetDeviceRegistryProperty(NewDeviceInfoSet, DeviceInfoData, DirectCast(SPDRP_HARDWAREID, Integer), propRegDataType, sbHWID, MAX_LEN, reqSize)
        Dim scanResult As New ScanResults(sbHWID.ToString(), sbDesc.ToString())
        Console.WriteLine("Device Detected: {0} - {1}", sbDesc.ToString(), sbHWID.ToString())

        Dim deviceInstallParams As New SP_DEVINSTALL_PARAMS()
        deviceInstallParams.cbSize = Marshal.SizeOf(GetType(SP_DEVINSTALL_PARAMS))
        SetupDiGetDeviceInstallParams(NewDeviceInfoSet, DeviceInfoData, deviceInstallParams)
        deviceInstallParams.DriverPath = "D:\STK1160_AVStream_ATV_20070831"
        If Not SetupDiBuildDriverInfoList(NewDeviceInfoSet, DeviceInfoData, SPDIT_COMPATDRIVER) Then
            Dim eCode As Integer = Marshal.GetLastWin32Error()
            Console.WriteLine(vbTab & "Error Building Driver Info List. Code: {0}", eCode)
        End If
        Dim memIndex As Integer = 0
        Dim drvErr As Integer = 0
        Dim drvData As New SP_DRVINFO_DATA()
        drvData.cbSize = Marshal.SizeOf(GetType(SP_DRVINFO_DATA))
        Dim enumResult As Boolean = SetupDiEnumDriverInfo(NewDeviceInfoSet, DeviceInfoData, SPDIT_COMPATDRIVER, memIndex, drvData)
        If Not enumResult Then
            drvErr = Marshal.GetLastWin32Error()
            Console.WriteLine(vbTab & "Error Enumerating Driver Info. Code: {0}", drvErr)
        End If
        'While enumResult AndAlso drvErr <> ERROR_NO_MORE_ITEMS

        '    System.Math.Max(System.Threading.Interlocked.Increment(memIndex), memIndex - 1)
        '     End While
        SetupDiDestroyDriverInfoList(NewDeviceInfoSet, DeviceInfoData, SPDIT_COMPATDRIVER)
        End If

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