GPSGetPosition (Function)

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Managing locks
Retrieved properties
Required application feature

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GPSGetPosition (Function)

In french: GPSRécupèrePosition

Retrieves information about the current device position.

Versions 17 and later

This function is now available for the Windows Phone applications.

GPSGetPosition must be run in a thread.

New in version 17

This function is now available for the Windows Phone applications.

GPSGetPosition must be run in a thread.

This function is now available for the Windows Phone applications.

GPSGetPosition must be run in a thread.

Versions 21 and later

This function is now available in Universal Windows 10 App mode.

New in version 21

This function is now available in Universal Windows 10 App mode.

Versions 22 and later

This function is now available for the WINDEV applications.

New in version 22

This function is now available for the WINDEV applications.

Example

MyPosition is geoPosition
MyPosition = GPSGetPosition()
// Checks the position validity with ErrorOccurred
IF ErrorOccurred THEN RETURN
Info(" Latitude : " + MyPosition..Latitude)
Info(" Longitude : " + MyPosition..Longitude)

Syntax

Retrieving information about a device (mobile, ...) Hide the details

<Result> = GPSGetPosition([<Timeout> [, <Message>]])

<Result>: geoPosition variable

geoPosition variable containing information about the device position. If the position is invalid, the ErrorOccurred variable is set to True and the error details are returned by ErrorInfo.

<Timeout>: Optional integer or optional Duration

Maximum timeout (in hundredths of a second) for updating the device position.
An error occurs if the timeout ends before the position of the device is updated. This error can be detected by the ErrorOccurred variable and the error details can be returned by ErrorInfo.
If this parameter is not specified, the timeout is set to 1 minute.
Remark: This parameter can correspond to:
an integer corresponding to the number of hundredths of a second,
a Duration variable,
Versions 23 and later
the direct indication of duration (1 s or 10 ms for example).
New in version 23
the direct indication of duration (1 s or 10 ms for example).
the direct indication of duration (1 s or 10 ms for example).

<Message>: Optional character string (with quotes)

Message of hourglass displayed when updating the position.
Remark: This parameter is taken into account only if the call is performed in the main application thread.
This parameter is ignored.

Remarks

Managing locks

GPSGetPosition is a locking function until the current device position was retrieved or until the timeout defined by the <Timeout> parameter has expired.

If the function is called in the main thread of the application, an hourglass will be displayed during the function execution. The message displayed by the hourglass can be specified via the <Message> parameter.
Otherwise, the execution of secondary thread will be locked during the function execution and no hourglass will be displayed.

Remark: To find out the last known device position without timeout, use GPSLastPosition. Caution, the positioning information that was retrieved may not correspond to the current device position if the device was moved while the GPS signal was not valid for example. To find out the date and time at which the position was calculated, use the ..MeasurementDate property of the geoPosition variable.

Retrieved properties

To find out whether the ..Speed, ..Precision, ..Direction or ..Altitude properties of geoPosition variable have been filled when retrieving the position, use ..SpeedValid, ..PrecisionValid, ..DirectionValid and ..AltitudeValid.
To reinitialize a geoPosition variable, use VariableReset.
The positioning information that was retrieved corresponds to the last known device position: therefore, they may not correspond to the current device position if the device was moved while the GPS signal was not valid for example. To find out the date and time at which the position was calculated, use the ..MeasurementDate property of geoPosition variable.
..Speed, ..Precision, ..Direction and ..Altitude will be specified only if the location provider allows it (otherwise, these properties will take their default value).

Versions 21 and later

Required application feature

The use of this function triggers the declaration of an application feature in the wizard for generating the application.

Required feature: Geolocation

This feature allows the applications to access the geolocation features found on the device or on the computer.

New in version 21

Required application feature

The use of this function triggers the declaration of an application feature in the wizard for generating the application.

Required feature: Geolocation

This feature allows the applications to access the geolocation features found on the device or on the computer.

Required application feature

The use of this function triggers the declaration of an application feature in the wizard for generating the application.

Required feature: Geolocation

This feature allows the applications to access the geolocation features found on the device or on the computer.

Component : wd250java.dll