GPS_VALID_
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. |
Requirements
OS Versions: Windows CE 5.01 and later.
Header: Gpsapi.h.
See Also
GPS Intermediate Driver Constants | GPS_POSITION | GPSGetPosition | Accessing Parsed GPS Data
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