C# Signature:

[DllImport("irprops.cpl", SetLastError=true)]
private static extern UInt32 BluetoothGetRadioInfo(IntPtr hRadio, ref Bluetooth_Radio_Info pRadioInfo);

User-Defined Types:

Bluetooth_Radio_Info

VB Signature:

    <DllImport("irprops.cpl", setlasterror:=True, CharSet:=CharSet.Auto)> _
    Private Shared Function BluetoothGetRadioInfo( _
    ByVal hRadio As IntPtr, _
    ByRef pRadioInfo As BluetoothRadioInfo) As UInteger
    End Function

User-Defined Types:

    Private Const BLUETOOTH_MAX_NAME_SIZE = 248

    <StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)> _
    Friend Structure BluetoothRadioInfo

    Public Size As Integer
    Public Address As Int64
    <MarshalAs(UnmanagedType.ByValTStr, SizeConst:=BLUETOOTH_MAX_NAME_SIZE)> _
    Public Name As String
    Public ClassofDevice As UInteger
    Public Subversion As UShort
    Public Manufacturer As UShort

    Public Sub Initialize()
        Me.Size = Marshal.SizeOf(Me)
    End Sub

    Public Function GetAddress() As String
        Dim fmt As String = "({0}:{1}:{2}:{3}:{4}:{5})"
        Return String.Format(fmt, _
                 ((Address >> 40) And &HFF).ToString("x2"), _
                 ((Address >> 32) And &HFF).ToString("x2"), _
                 ((Address >> 24) And &HFF).ToString("x2"), _
                 ((Address >> 16) And &HFF).ToString("x2"), _
                 ((Address >> 8) And &HFF).ToString("x2"), _
                 (Address And &HFF).ToString("x2"))
    End Function

    End Structure

Alternative Managed API:

http://32feet.net/

Notes:

XP SP1 required.

See the BluetoothAPIs.h file in the platform SDK.

Tips & Tricks:

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Sample Code:

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