// converts GPSAPI status to System.Device status
private static GeoPositionStatus ToGeoPositionStatus(NativeMethods.SERVICE_STATE state)
{
GeoPositionStatus newStatus = GeoPositionStatus.NoData;
switch (state)
{
case NativeMethods.SERVICE_STATE.SERVICE_STATE_UNKNOWN:
case NativeMethods.SERVICE_STATE.SERVICE_STATE_OFF:
newStatus = GeoPositionStatus.Disabled;
break;
case NativeMethods.SERVICE_STATE.SERVICE_STATE_UNLOADING:
case NativeMethods.SERVICE_STATE.SERVICE_STATE_UNINITIALIZED:
case NativeMethods.SERVICE_STATE.SERVICE_STATE_SHUTTING_DOWN:
newStatus = GeoPositionStatus.NoData;
break;
case NativeMethods.SERVICE_STATE.SERVICE_STATE_STARTING_UP:
case NativeMethods.SERVICE_STATE.SERVICE_STATE_ON:
newStatus = GeoPositionStatus.Initializing;
break;
}
return(newStatus);
}
private static void WaitForStatus(IntPtr hService, NativeMethods.SERVICE_STATE desiredStatus, TimeSpan timeout)
{
Stopwatch swLoop = new Stopwatch();
swLoop.Start();
NativeMethods.SERVICE_STATUS serviceStatus = new NativeMethods.SERVICE_STATUS();
do
{
Thread.Sleep(500);
if (!NativeMethods.QueryServiceStatus(hService, ref serviceStatus))
{
throw new Exception($"WaitForStatus: Unable to query status of service, {Marshal.GetLastWin32Error()}");
}
}while (serviceStatus.dwCurrentState != (int)desiredStatus && (swLoop.ElapsedMilliseconds <= timeout.TotalMilliseconds));
if (serviceStatus.dwCurrentState != (int)desiredStatus)
{
throw new Exception($"WaitForStatus: Service failed to reach desired state: {desiredStatus}, current state: {serviceStatus.dwCurrentState}");
}
}