GPS_VALID_ (Compact 2013)

3/26/2014

This family of constants specifies which of the fields in the GPS_POSITION structure are valid.

The GPSGetPosition function fills a GPS_POSITION structure with information that includes the latitude and longitude returned by GPS hardware. GPS_POSITION includes a field named dwValidFields, which specifies the fields in the structure that are valid, using a bitwise combination of the constants in the following table.

Value	Description
GPS_VALID_UTC_TIME = 0x00000001	If set, the stUTCTime field is valid.
GPS_VALID_LATITUDE = 0x00000002	If set, the dblLatitude field is valid.
GPS_VALID_LONGITUDE = 0x00000004	If set, the dblLongitude field is valid.
GPS_VALID_SPEED = 0x00000008	If set, the flSpeed field is valid.
GPS_VALID_HEADING = 0x00000010	If set, the flHeading field is valid.
GPS_VALID_MAGNETIC_VARIATION = 0x00000020	If set, the dblMagneticVariation field is valid.
GPS_VALID_ALTITUDE_WRT_SEA_LEVEL = 0x00000040	If set, the flAltitudeWRTSeaLevel field is valid.
GPS_VALID_ALTITUDE_WRT_ELLIPSOID = 0x00000080	If set, the flAltitudeWRTEllipsoid field is valid.
GPS_VALID_POSITION_DILUTION_OF_PRECISION = 0x00000100	If set, the flPositionDilutionOfPrecision field is valid.
GPS_VALID_HORIZONTAL_DILUTION_OF_PRECISION = 0x00000200	If set, the flHorizontalDilutionOfPrecision field is valid.
GPS_VALID_VERTICAL_DILUTION_OF_PRECISION = 0x00000400	If set, the flVerticalDilutionOfPrecision field is valid.
GPS_VALID_SATELLITE_COUNT = 0x00000800	If set, the dwSatelliteCount field is valid.
GPS_VALID_SATELLITES_USED_PRNS = 0x00001000	If set, the rgdwSatellitesUsedPRNs field is valid.
GPS_VALID_SATELLITES_IN_VIEW = 0x00002000	If set, the dwSatellitesInView field is valid.
GPS_VALID_SATELLITES_IN_VIEW_PRNS = 0x00004000	If set, the rgdwSatellitesInViewPRNs field is valid.
GPS_VALID_SATELLITES_IN_VIEW_ELEVATION = 0x00008000	If set, the rgdwSatellitesInViewElevation field is valid.
GPS_VALID_SATELLITES_IN_VIEW_AZIMUTH = 0x00010000	If set, the rgdwSatellitesInViewAzimuth field is valid.
GPS_VALID_SATELLITES_IN_VIEW_SIGNAL_TO_NOISE_RATIO = 0x00020000	If set, the rgdwSatellitesInViewSignalToNoiseRatio field is valid.

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Requirements

Header

gpsapi.h

See Also

Reference

GPS Intermediate Driver Constants
GPS_POSITION
GPSGetPosition