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Stored procedures
Initializes the parameters of geolocation WLanguage functions and finds a location provider.
To define the device position, you have the ability to use two types of "location providers":
  • the network of GPS satellites.
  • the triangulation performed from the network of mobile and Wi-Fi antennas.
Each provider differs by the precision of its information, its energy consumption and the required hardware configuration (presence of a GPS chip, Internet access, etc.).
Versions 21 and later
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
New in version 21
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
Versions 22 and later
WINDEVWindows This function is now available for the WINDEV applications.
New in version 22
WINDEVWindows This function is now available for the WINDEV applications.
WINDEVWindows This function is now available for the WINDEV applications.
Example
Syntax
GPSInitParameter(<Provider to find> [, <Options>])
<Provider to find>: Integer constant
Type of requested location provider.
gpsAutoDefines the most suitable provider according to the criteria specified in the <Options> parameter.
gpsNetworkCalculates the position by using the network of mobile or Wi-Fi antennas.
gpsSatelliteCalculates the position by using the network of GPS satellites.
Versions 17 and later
WINDEV This parameter is ignored.
New in version 17
WINDEV This parameter is ignored.
WINDEV This parameter is ignored.
<Options>: Optional combination of Integer constants
Selection criteria for the location provider.
The possible values are:
gpsAltitudeIndicates whether the provider must be able to specify the altitude of the device.
WINDEV This constant is not available.
gpsDirectionIndicates whether the provider must be able to specify the move direction of the device.
WINDEV This constant is not available.
gpsEnergyHighIndicates whether the provider can require a high quantity of energy.
WINDEV This constant is not available.
gpsEnergyLowIndicates whether the provider must require a low quantity of energy.
WINDEV This constant is not available.
gpsEnergyMediumIndicates whether the provider can require a medium quantity of energy.
WINDEV This constant is not available.
gpsPrecisionHighThe position is calculated with a high precision.
gpsPrecisionLowThe position is calculated with a low precision.
gpsSpeedIndicates whether the provider must be able to specify the moving speed.
WINDEV This constant is not available.
Remarks:
  • The gpsPrecisionxx constants are exclusive between themselves.
  • The gpsEnergyxx constants are exclusive between themselves.
  • No constant is required. If no constant is specified, the function will search for a location provider that consumes the least amount of energy with any precision and without any specific characteristics.
Remarks

Special cases

  • Depending on the type of device on which the application is started, there may be no provider corresponding to all the specified criteria (no GPS chip, no Internet access, ...).
    If no providers correspond the specified criteria, these criteria are ignored one after the other until a valid provider is obtained according to the following order: energy consumption, precision, direction, speed and altitude.
  • The geolocation functions can, according to the selected setting and to the call frequency, consume a lot of resources on the device (battery, bandwidth, etc.). When geolocation functions are no longer used by the application, you must call GPSEnd.
  • If a geolocation function is called while the parameters have not been defined by GPSInitParameter, the application will attempt to use the location via GPS first then the one via the network of mobile antennas if the GPS system is not available.
  • GPS functions cannot be used to perform an indoor geolocation: the positioning cannot be performed via Wi-Fi hotspots only.
Versions 21 and later
Universal Windows 10 App

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
Universal Windows 10 App

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.
Universal Windows 10 App

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.
Related Examples:
Android GPS Android (WINDEV Mobile): Android GPS
[ + ] This example presents the use of the GPS functions of WLanguage in an Android application.
It is used to retrieve at regular interval:
- The latitude
- The longitude
- The altitude
- The speed
- The direction
Component : wd250java.dll
Minimum version required
  • Version 15
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