C# Signature:

[DllImport("bthprops.cpl", SetLastError=true)]
static extern uint BluetoothAuthenticateDeviceEx(IntPtr hwndParentIn, IntPtr hRadioIn, ref BLUETOOTH_DEVICE_INFO pbtdiInout, BLUETOOTH_OOB_DATA pbtOobData, uint authenticationRequirement);
[DllImport("irprops.cpl", SetLastError=true)]
private static extern uint BluetoothAuthenticateDevice(IntPtr hwndParent, IntPtr hRadio, ref Bluetooth_Device_Info pbtdi, [MarshalAs(UnmanagedType.LPWStr)]string pszPasskey, ulong ulPasskeyLength);

VB Signature:

Declare Function BluetoothAuthenticateDeviceEx Lib "irprops.dll" (TODO) As TODO
Declare Function BluetoothAuthenticateDevice Lib "irprops.dll" (TODO) As TODO

User-Defined Types:

None.

BLUETOOTH_DEVICE_INFO

Alternative Managed API:

Do you know one? Please contribute it!

Notes:

The authenticationRequirement is actually an enum defined as:

None.

  typedef enum  {
    MITMProtectionNotRequired        = 0x00,
    MITMProtectionRequired           = 0x01,
    MITMProtectionNotRequiredBonding     = 0x02,
    MITMProtectionRequiredBonding        = 0x03,
    MITMProtectionNotRequiredGeneralBonding  = 0x04,
    MITMProtectionRequiredGeneralBonding     = 0x05,
    MITMProtectionNotDefined         = 0xff
  } AUTHENTICATION_REQUIREMENTS;

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Sample Code:

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