private BluetoothRadio(IntPtr handle, BluetoothInterop.BluetoothRadioInfo radioInfo)
{
Contract.Requires(handle != IntPtr.Zero);
this.handle = handle;
Name = radioInfo.Name;
Address = radioInfo.Address;
Manufacturer = radioInfo.Manufacturer;
}
public static BluetoothRadio[] FindAll(int maxCount = int.MaxValue)
{
Contract.Requires(maxCount > 0);
Contract.Ensures(Contract.Result <BluetoothRadio[]>() != null);
Contract.Ensures(Contract.ForAll(Contract.Result <BluetoothRadio[]>(), r => r != null && !r.IsDisposed));
var findParams = new BluetoothInterop.BluetoothFindRadioParams
{
Size = BluetoothInterop.BluetoothFindRadioParams.SIZE
};
IntPtr hRadio;
var hFind = BluetoothInterop.BluetoothFindFirstRadio(ref findParams, out hRadio);
if (hFind == IntPtr.Zero)
{
var hr = Marshal.GetLastWin32Error();
if (hr != 0 && hr != BluetoothInterop.ERROR_NO_MORE_ITEMS)
{
Trace.TraceWarning("BluetoothFindFirstRadio failed with error code {0}", hr);
BluetoothInterop.ThrowBluetoothException(hr);
}
return(new BluetoothRadio[0]);
}
try
{
var res = new List <BluetoothRadio>();
while (hRadio != IntPtr.Zero)
{
var radioInfo = new BluetoothInterop.BluetoothRadioInfo
{
Size = BluetoothInterop.BluetoothRadioInfo.SIZE
};
var errCode = BluetoothInterop.BluetoothGetRadioInfo(hRadio, ref radioInfo);
if (errCode != 0)
{
Trace.TraceWarning("BluetoothGetRadioInfo failed with error code {0}", errCode);
BluetoothInterop.CloseHandle(hRadio);
}
else
{
res.Add(new BluetoothRadio(hRadio, radioInfo));
if (res.Count == maxCount)
{
break;
}
}
if (!BluetoothInterop.BluetoothFindNextRadio(hFind, out hRadio))
{
var hr = Marshal.GetLastWin32Error();
if (hr != 0 && hr != BluetoothInterop.ERROR_NO_MORE_ITEMS)
{
Trace.TraceWarning("BluetoothFindNextRadio failed with error code {0}", hr);
BluetoothInterop.ThrowBluetoothException(hr);
}
break;
}
}
return(res.ToArray());
}
finally
{
if (!BluetoothInterop.BluetoothFindRadioClose(hFind))
{
Trace.TraceWarning("BluetoothFindRadioClose failed with error code {0}",
Marshal.GetLastWin32Error());
}
}
}
