GPSNOTIFY_DATA

The GPS data has changed

Parameters passed to GPSNOTIFYPROC:

lParam1

A data bit mask representing the categories of data that have changed.

This value will be a combination of any of the following values:

GPSDATAMASK Value	Meaning
`GPSDATAMASK_POSITION`	Position has changed
`GPSDATAMASK_SATELLITE`	Satellite information has changed
`GPSDATAMASK_DOP`	Dilution Of Precision has changed
`GPSDATAMASK_BEARING`	Bearing has changed
`GPSDATAMASK_WAYPOINT`	A Waypoint has changed
`GPSDATAMASK_TIME`	GPS time has changed

lParam2

A pointer to a NULL-terminated text status message: "GPS Data has changed"". On Windows CE platforms this will be a Unicode buffer; on all other platforms it is an ASCII buffer.

lParam3

Contains the user-defined parameter lUserParam passed to the GpsSetNotificationCallback function.