private void Dispose(bool disposing)
{
if (handle != IntPtr.Zero)
{
BluetoothInterop.CloseHandle(handle);
handle = IntPtr.Zero;
}
}
private bool Refresh(bool throwOnError)
{
var handle = Radio.Handle;
if (handle == IntPtr.Zero)
{
return(false);
}
var hr = BluetoothInterop.BluetoothGetDeviceInfo(handle, ref devInfo);
return(CheckHr(hr, "BluetoothGetDeviceInfo", throwOnError));
}
private bool CheckHr(int hr, string funcName, bool throwOnError)
{
if (hr == 0)
{
return(true);
}
Trace.TraceWarning("Function {0} for device '{1}' returns {2}",
funcName, this, hr);
if (throwOnError)
{
BluetoothInterop.ThrowBluetoothException(hr);
}
return(false);
}
public BluetoothDevice[] FindDevices(TimeSpan timeout,
bool includeAuthenticated = true,
bool includeConnected = true, bool includeRemembered = true,
bool includeUnknown = true, bool issueInquiry = true)
{
Contract.Requires(timeout >= TimeSpan.Zero);
Contract.Requires(timeout <= TimeSpan.FromSeconds(48 * BluetoothInterop.TIMEOUT_MULTIPLIER_UNIT_SEC));
Contract.Requires(!IsDisposed);
Contract.Ensures(Contract.Result <BluetoothDevice[]>() != null);
Contract.Ensures(Contract.ForAll(Contract.Result <BluetoothDevice[]>(), d => d != null && d.Radio == this));
var prms = new BluetoothInterop.BluetoothDeviceSearchParams
{
Size = BluetoothInterop.BluetoothDeviceSearchParams.SIZE,
hRadio = handle,
ReturnAuthenticated = includeAuthenticated,
ReturnConnected = includeConnected,
ReturnRemembered = includeRemembered,
ReturnUnknown = includeUnknown,
IssueInquiry = issueInquiry,
TimeoutMultiplier = Convert.ToByte(Math.Round(timeout.TotalSeconds / BluetoothInterop.TIMEOUT_MULTIPLIER_UNIT_SEC)),
};
var devInfo = new BluetoothInterop.BluetoothDeviceInfo
{
Size = BluetoothInterop.BluetoothDeviceInfo.SIZE
};
var res = new List <BluetoothDevice>();
var hFind = BluetoothInterop.BluetoothFindFirstDevice(ref prms, ref devInfo);
if (hFind != IntPtr.Zero)
{
while (true)
{
res.Add(new BluetoothDevice(this, devInfo));
if (!BluetoothInterop.BluetoothFindNextDevice(hFind, ref devInfo))
{
var hr = Marshal.GetLastWin32Error();
if (hr != 0 && hr != BluetoothInterop.ERROR_NO_MORE_ITEMS)
{
Trace.TraceWarning("BluetoothFindNextDevice failed with error code {0}", hr);
BluetoothInterop.ThrowBluetoothException(hr);
}
break;
}
}
if (!BluetoothInterop.BluetoothFindDeviceClose(hFind))
{
var hr = Marshal.GetLastWin32Error();
Trace.TraceWarning("BluetoothFindDeviceClose failed with error code {0}", hr);
}
}
else
{
var hr = Marshal.GetLastWin32Error();
if (hr != 0 && hr != BluetoothInterop.ERROR_NO_MORE_ITEMS)
{
Trace.TraceWarning("BluetoothFindFirstDevice failed with error code {0}", hr);
BluetoothInterop.ThrowBluetoothException(hr);
}
}
return(res.ToArray());
}
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());
}
}
}
