BTLECharacteristicChangeOfValue (Function)

ONLINE HELP
WINDEV, WEBDEV AND WINDEV MOBILE

Version:

Home | Sign in | English

Help / WLanguage / WLanguage functions / Communication / BTLE functions

WINDEV

WEBDEV

WINDEV Mobile

Others

See also

BTLECharacteristicChangeOfValue (Function)

In french: BTLECaractéristiqueChangementValeur

Enables or disables detection of changes in the value of a Bluetooth Low Energy characteristic.

For example, this makes it possible to generate a notification when a temperature sensor detects any changes.

New in version 2025

This function is now available for WINDEV applications in Windows.

Example

characteristic is btleCharacteristic
BTLECharacteristicChangeOfValue(characteristic, CB_ChangeValue)
// ===========================
PROCEDURE CB_ChangeValue (characteristic is btleCharacteristic <useful> , bufValue is Buffer)
// Get value and display it in a Static Text control
sBuf is ANSI string = bufValue
STC_SubscriptionValue = sBuf

crtc is btleCharacteristic
BTLECharacteristicChangeOfValue(crtc)

Syntax

Asking to be notified whenever the value of a characteristic changes Hide the details

BTLECharacteristicChangeOfValue(<Characteristic> [, <WLanguage procedure>])

<Characteristic>: btleCharacteristic variable

Name of the btleCharacteristic variable corresponding to the characteristic to use.

<WLanguage procedure>: Procedure name

Name of the WLanguage procedure ("callback") called when a characteristic changes on the device. For more details on this procedure, see Parameters of the procedure used by BTLECharacteristicChangeOfValue.

Stopping the detection regarding the change of characteristic value Hide the details

BTLECharacteristicChangeOfValue(<Characteristic>)

<Characteristic>: btleCharacteristic variable

Name of the btleCharacteristic variable corresponding to the characteristic to use.

Related Examples:

Cross-platform examples (WINDEV Mobile): WM Bluetooth 4

[ + ] This example explains how to use the Bluetooth Low Energy functions (Bluetooth LE): BTLExxx.

It is an application allowing you to find the nearby BTLE devices, to connect to them and to interact with the proposed services.

Component: wd300com.dll