internal static extern bool DeviceIoControl(
IntPtr hDevice,
uint dwIoControlCode,
ref long InBuffer,
int nInBufferSize,
ref BTH_RADIO_INFO OutBuffer,
int nOutBufferSize,
out int pBytesReturned,
IntPtr lpOverlapped);
private void ReadVersionsInfo()
{
if (_remoteVersionsInfo != null)
return;
#if WinXP
bool success;
BTH_RADIO_INFO buf;
IntPtr radioHandle = BluetoothRadio.PrimaryRadio.Handle;
/*
* http://msdn.microsoft.com/en-us/library/ff536685(v=VS.85).aspx
* The IOCTL_BTH_GET_RADIO_INFO request obtains information about the specified remote radio.
* struct _BTH_RADIO_INFO { ULONGLONG lmpSupportedFeatures; USHORT mfg; USHORT lmpSubversion; UCHAR lmpVersion;
*/
/*
* e.g. BTH_RADIO_INFO v1_2, 777, Broadcom, 00000808380DFEFF.
* When no connection: INFO: IOCTL_BTH_GET_RADIO_INFO failure: 1167 = 0x48F.
* 1167 = ERROR_DEVICE_NOT_CONNECTED
*/
//var h = this.
// Windows 7 IOCTL
long bthaddr = this.DeviceAddress.ToInt64();//endian?
buf = new BTH_RADIO_INFO();
var len = Marshal.SizeOf(buf);
int bytesReturned;
success = NativeMethods.DeviceIoControl(radioHandle,
NativeMethods.MsftWin32BthIOCTL.IOCTL_BTH_GET_RADIO_INFO,
ref bthaddr, Marshal.SizeOf(bthaddr),
ref buf, len, out bytesReturned, IntPtr.Zero);
if (!success) {
var gle = Marshal.GetLastWin32Error();
var ex = new System.ComponentModel.Win32Exception();
Debug.WriteLine(string.Format(CultureInfo.InvariantCulture,
"INFO: IOCTL_BTH_GET_RADIO_INFO failure: {0} = 0x{1:X}.",
(InTheHand.Win32.Win32Error)gle, gle));
Debug.Assert(gle == ex.NativeErrorCode);
throw ex;
} else {
_remoteVersionsInfo = buf.ConvertToRadioVersions();
}
#else
LmpVersion lmpVersion; UInt16 lmpSubversion; Manufacturer mfg; LmpFeatures lmpSupportedFeatures;
int ret = NativeMethods.BthReadRemoteVersion(
this.DeviceAddress.ToByteArrayLittleEndian(),
out lmpVersion, out lmpSubversion, out mfg, out lmpSupportedFeatures);
const int ERROR_SUCCESS = 0;
if (ret == ERROR_SUCCESS) {
_remoteVersionsInfo = new RadioVersions(lmpVersion, lmpSubversion, lmpSupportedFeatures, mfg);
} else {
var gle = Marshal.GetLastWin32Error();
var ex = new System.ComponentModel.Win32Exception(ret);
Debug.WriteLine("BthReadRemoteVersion fail: " + ret + ", gle: " + gle);
Debug.Assert(ret == gle, "WAS using gle but docs say use ret. Check that are the same.");
throw ex;
}
#endif
}
