@msdn=http://search.microsoft.com/search/results.aspx?qu=$$$ @pinvoke=http://pinvoke.net/$$$.htm Summary: Start enumerating local bluetooth radios (i.e. the devices plugged into the computer). !!!!C# Signature: [DllImport("irprops.cpl", SetLastError=true)] static extern IntPtr BluetoothFindFirstRadio(ref Bluetooth_Find_Radio_Params pbtfrp,out IntPtr phRadio ); !!!!User-Defined Types: [Bluetooth_Find_Radio_Params] !!!!VB Signature: <DllImport("irprops.cpl", SetLastError:=True, CharSet:=CharSet.Auto)> _ Private Shared Function BluetoothFindFirstRadio( _ <[In]()> ByRef findRadioParams As BluetoothFindRadioParams, _ <Out()> ByRef hRadio As IntPtr) As IntPtr End Function !!!!User-Defined Types: Private Structure BluetoothFindRadioParams Public size As UInteger Public Sub Initialize() Me.size = Marshal.SizeOf(GetType(BluetoothFindRadioParams)) End Sub End Structure !!!!Alternative Managed API: http://32feet.net/ !!!!Notes: XP SP1 required. See the BluetoothAPIs.h file in the platform SDK. !!!!Tips & Tricks: Please add some! !!!!Sample Code: C# class Bluetooth { public Bluetooth() { BLUETOOTH_FIND_RADIO_PARAM parameters = new BLUETOOTH_FIND_RADIO_PARAM(); parameters.Initialize(); IntPtr firstRadio; IntPtr nextRadio; nextRadio = BluetoothFindFirstRadio(ref parameters, out firstRadio); //work with bluetooth CloseHandle(firstRadio); CloseHandle(nextRadio); } /// <summary> /// The BLUETOOTH_FIND_RADIO_PARAMS structure facilitates enumerating installed Bluetooth radios. /// </summary> [StructLayout(LayoutKind.Sequential)] private struct BLUETOOTH_FIND_RADIO_PARAM { internal UInt32 dwSize; internal void Initialize() { this.dwSize = (UInt32)Marshal.SizeOf(typeof(BLUETOOTH_FIND_RADIO_PARAM)); } } /// <summary> /// Closes an open object handle. /// </summary> /// <param name="handle">[In] A valid handle to an open object.</param> /// <returns>If the function succeeds, the return value is nonzero. If the function fails, the return value is zero. To get extended error information, call GetLastError.</returns> [DllImport("Kernel32.dll", SetLastError = true)] static extern bool CloseHandle(IntPtr handle); /// <summary> /// Finds the first bluetooth radio present in device manager /// </summary> /// <param name="pbtfrp">Pointer to a BLUETOOTH_FIND_RADIO_PARAMS structure</param> /// <param name="phRadio">Pointer to where the first enumerated radio handle will be returned. When no longer needed, this handle must be closed via CloseHandle.</param> /// <returns>In addition to the handle indicated by phRadio, calling this function will also create a HBLUETOOTH_RADIO_FIND handle for use with the BluetoothFindNextRadio function. /// When this handle is no longer needed, it must be closed via the BluetoothFindRadioClose. /// Returns NULL upon failure. Call the GetLastError function for more information on the error. The following table describe common errors:</returns> [DllImport("irprops.cpl", SetLastError = true)] static extern IntPtr BluetoothFindFirstRadio(ref BLUETOOTH_FIND_RADIO_PARAM pbtfrp, out IntPtr phRadio); } Documentation: BluetoothFindFirstRadio@msdn on MSDN
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