Owner's manual

LandMark Mobile User’s Manual 69
LMCE_API BOOL GetInternalGPS
Argument for Function Function Affected
(DWORD &tic, Unique ID
double &r_lat, Latitude in Decimal Degree
double &r_lon, Longitude in Decimal Degree
double &r_alt, Elevation in meters
double &r_pdop, GPS data
double &r_ehe, GPS error in meters
int &quality); 2D, 3D, etc.
Internal GPS — Pushed Data
The only dierence in this function compared to pulling data,
is in the protocol. Once the third part has called for data, the
function blocks the calling thread/process until LandMark
Mobile signals when new data are processed. There is not a
three second delay aer this function is called, but the function
listens for a QUIT from LandMark Mobile to tell the third party
program that the data are ready.
LMCE_API BOOL GetInternalGPSRT
Argument for Function Function Affected
(DWORD &tic, Unique ID
double &r_lat, Latitude in Decimal Degree
double &r_lon, Longitude in Decimal Degree
double &r_alt, Elevation in meters
double &r_pdop, GPS data
double &r_ehe GPS error in meters
int &quality); 2D, 3D, etc.
Masked GPS — Pulled
The Masked GPS functions give more formaing options to the
third party application. The Get Mask GPS lters the GPS data
according to the preferences set in LandMark Mobile (refer to the
Conguration section of LandMark Mobile). The protocol is the
same as the Pulled internal GPS function.
Check the GPS data (“mask_msg” argument) to see if it is masked
before using the data being received. The mask values are
described aer the function denition.