/// <summary>
/// Creates a new instance of a Native Wifi service client.
/// Throws Win32 errors: ERROR_INVALID_PARAMETER, ERROR_NOT_ENOUGH_MEMORY, RPC_STATUS, ERROR_REMOTE_SESSION_LIMIT_EXCEEDED.
/// </summary>
public WlanClient()
{
int errorCode = 0;
OperatingSystem osInfo = Environment.OSVersion;
bool isWinXP =
osInfo.Platform == PlatformID.Win32NT &&
osInfo.Version.Major == 5 &&
osInfo.Version.Minor != 0;
if (isWinXP && osInfo.ServicePack == "Service Pack 1") // wlanapi not supported in sp1 (or sp2 without hotfix)
{
errorCode = NO_WIFI;
}
else
{
// Perform exception safe init
// It can be SP2 without hotfix which would generate exception
try
{
errorCode = WlanInterop.WlanOpenHandle(WlanInterop.WLAN_CLIENT_VERSION_XP_SP2, IntPtr.Zero, out negotiatedVersion, out clientHandle);
}
catch
{
errorCode = NO_WIFI;
}
}
if (errorCode != 0)
{
NoWifiAvailable = true;
return;
}
try
{
// Interop callback
wlanNotificationCallback = new WlanInterop.WlanNotificationCallbackDelegate(OnWlanNotification);
WlanNotificationSource prevSrc;
WlanInterop.ThrowIfError(WlanInterop.WlanRegisterNotification(clientHandle, WlanNotificationSource.All, false, wlanNotificationCallback, IntPtr.Zero, IntPtr.Zero, out prevSrc));
}
catch
{
WlanInterop.WlanCloseHandle(clientHandle, IntPtr.Zero);
throw;
}
}