public GPSPosition GetPosition()
{
GPSPosition ret = null;
bool posAcquired = false;
lock (this) {
if (IsOpen())
{
int cb = Marshal.SizeOf(typeof(GPSPosition));
IntPtr ptr = LocalAlloc(LPTR, cb);
ret = new GPSPosition();
ret.dwVersion = 1;
ret.dwSize = Marshal.SizeOf(typeof(GPSPosition));
// Marshal our data to the native pointer we allocated.
Marshal.StructureToPtr(ret, ptr, false);
Int32 i = GPSGetPosition(hGPSDevice, ptr, mMaximunAge, 0);
if (i == 0)
{
Marshal.PtrToStructure(ptr, ret);
posAcquired = true;
// COMENTADO.
// Ahora la fecha la sacamos del SQL Server.
//' '' Seteo la hora actual en el sistema con la que tienen los satélites
// ''If ret.isValidField(GPSPosition.GPS_VALID_FIELDS.GPS_VALID_UTC_TIME) Then
// '' If ret.stUTCTime.wYear >= 2007 Then
// '' 'Si la diferencia de tiempo es de más de 2 minutos, actualiza la hora
// '' If Math.Abs(ret.Time.Subtract(DateTime.UtcNow).Minutes) > 2 Then
// '' Dim rc As UInteger
// '' rc = SetSystemTime(ret.stUTCTime)
// '' End If
// '' End If
// ''End If
}
else
{
MessageBox.Show("Error# " + i.ToString());
}
LocalFree(ptr);
}
}
if (posAcquired == false)
{
if (PositionReceived != null)
{
PositionReceived(ret);
}
}
return(ret);
}
public static bool IsPositionValid(GPSPosition position, bool ValidateFix, float MAXDOP)
{
bool posOk = false;
if ((position != null))
{
if (position.isValidField(GPSPosition.GPS_VALID_FIELDS.GPS_VALID_UTC_TIME) & position.isValidField(GPSPosition.GPS_VALID_FIELDS.GPS_VALID_HORIZONTAL_DILUTION_OF_PRECISION) & position.isValidField(GPSPosition.GPS_VALID_FIELDS.GPS_VALID_LATITUDE) & position.isValidField(GPSPosition.GPS_VALID_FIELDS.GPS_VALID_LONGITUDE) & (position.fixType >= GPSFixType.XyD | ValidateFix == false))
{
if ((MAXDOP >= position.flHorizontalDilutionOfPrecision) | MAXDOP == -1)
{
posOk = true;
}
}
}
return(posOk);
}
private void ticking()
{
try
{
if (!glbGPS.IsOpen())
{
ST("No esta abierto el GPS!!!");
}
GPSPosition Position = glbGPS.GetPosition();
if ((Position != null))
{
HDOPLabel.Text = Position.flHorizontalDilutionOfPrecision.ToString("0.00");
//ErrorLabel.Text = (Position.flHorizontalDilutionOfPrecision * 6) + " m";
SatelitesLabel.Text = Position.dwSatelliteCount.ToString();
if (Position.isValidField(GPSPosition.GPS_VALID_FIELDS.GPS_VALID_LONGITUDE))
{
LongLabel.Text = Position.dblLongitude.ToString("0.0000000");
}
else
{
LongLabel.Text = "";
}
if (Position.isValidField(GPSPosition.GPS_VALID_FIELDS.GPS_VALID_LATITUDE))
{
LatLabel.Text = Position.dblLatitude.ToString("0.0000000");
}
else
{
LatLabel.Text = "";
}
try
{
if (Position.isValidField(GPSPosition.GPS_VALID_FIELDS.GPS_VALID_UTC_TIME))
{
StampLabel.Text = Position.Time.ToString("yyyy/MM/dd HH:mm");
}
else
{
StampLabel.Text = "";
}
}
catch (Exception ex)
{
StampLabel.Text = ex.ToString(); //Position.Time.ToString();
}
switch (Position.fixType)
{
case GPSFixType.Unknown:
FixTypeLabel.Text = "";
break;
case GPSFixType.XyD:
FixTypeLabel.Text = "2D";
break;
case GPSFixType.XyzD:
FixTypeLabel.Text = "3D";
break;
}
switch (Position.fixQuality)
{
case GPSFixQuality.DGps:
FixTypeLabel.Text += " DGPS";
break;
case GPSFixQuality.Gps:
FixTypeLabel.Text += " GPS";
break;
}
lastPosition = Position;
if (glbGPS.IsPositionValid(Position))
{
pnlFixed.BackColor = Color.LimeGreen;
StatusLabel.BackColor = Color.LimeGreen;
ST("Posicion obtenida");
gotFix = true;
btAceptar.Enabled = true;
Time = DateTime.Now;
// timer1.Enabled = false;
}
else
{
pnlFixed.BackColor = Color.OrangeRed;
StatusLabel.BackColor = Color.OrangeRed;
if (!odd)
{
odd = true;
ST("Esperando posición");
}
else
{
odd = false;
ST("Buscando satélites");
}
gotFix = false;
btAceptar.Enabled = false;
}
}
else
{
//GrabarButton.Enabled = False
pnlFixed.BackColor = Color.Red;
}
}
catch (Exception ex)
{
ST(ex.Message.ToString());
}
}
