GPS ToolKit events are signals that GPS ToolKit sends to your application when GPS data has been updated. For example, when a fix update has occurred you can use GPS ToolKit's FixUpdate event to get the updates positional, speed, course, and status data.

All variables passed into the event handling function are of type VARIANT. Each event is listed with its variables (arguments) and their associated variant types below. If data is not available for a particular variable, the variable's type is VT_EMPTY.

The events fired by the GPS ToolKit are as follows:

Event	Arguments	Description
FixUpdate	VT_BOOL(Boolean/bool) FixGood VT_DATE(Date/COleDateTime) FixDateTime VT_BSTR(String/BSTR) Latitude VT_BSTR(String/BSTR) Longitude VT_R8(Double/double) Altitude VT_R8(Double/double) Speed VT_R8(Double/double) TrueCourse	Fired when updated fix data has been received from the GPS.

RawDataReceived	VT_BSTR(String/BSTR) RawData VT_I4(Integer/long) NumBytesRead	Fired when a complete data sentence has been received from the GPS.
SatelliteUpdate	VT_BOOL(Boolean/bool) AutomaticOperation VT_I2(Integer/short) OperationMode VT_I2(Integer/short) NumSatellitesInView VT_R8(Double/double) HDOP VT_R8(Double/double) PDOP VT_R8(Double/double) VDOP VT_ARRAY \| VT_VARIANT(VB array/SAFEARRAY) FixSatellitePRNs VT_ARRAY \| VT_VARIANT(VB array/SAFEARRAY) SatelliteInViewPRNs	Fired when updated satellite information has been received from the GPS.
NavUpdate	VT_BSTR(String/BSTR) OriginWptID VT_BSTR(String/BSTR) DestWptID VT_BSTR(String/BSTR) DestWptLatitude VT_BSTR(String/BSTR) DestWptLongitude VT_R8(Double/double) TrueBearingToDest VT_R8(Double/double) RangeToDest VT_BSTR(String/BSTR) CrossTrackError VT_R8(Double/double) DestClosingVelocity VT_BOOL(Boolean/bool) DestArrivalAlarm VT_BSTR(String/BSTR) RouteName VT_ARRAY \| VT_VARIANT(VB array/SAFEARRAY) WptsInRoute	Fired when updated navigation information has been received from the GPS.
FileComplete	None	Fired when file read has completed or been cancelled.

For detailed instructions and examples of handling GPS ToolKit events in Visual Basic, see Handling Events in Visual Basic or for Visual C++ see Handling Events in Visual C++. For other environments, please consult your development environment's documentation regarding ActiveX events.