<fbSession variable>.Start (Function)

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Facebook functions

Prefix syntax

Start

Presentation

Example

Starting the session

Characteristics of the session

Closing the session

Incompatibility between the IE ActiveX (and oAuth2) and the use of .NET assembly

See also

<fbSession variable>.Start (Function)

In french: <Variable fbSession>.Ouvre

Used to authenticate and log in to Faceboook.

This function is not available in the simulator.

Caution: This feature is available up to Android 11. Starting with Android 12, this function causes a fatal error.
It is recommended to:

test the Android version used with SysAndroidVersion.
use AuthIdentify to manage Facebook authentication.

Example

MaSession is fbSession
MaSession.AppID = "1702546803104741"
MaSession.AppSecret = "badf00ddeadbeefbadc0deoff1ce8ecd"
MaSession.Permission = [fbInfoProfile, fbEmail]
IF MaSession.Start() THEN
Info("Connecté")
END

Syntax

<Result> = <Session>.Start()

<Result>: Boolean

True if the connection was established,
False otherwise.

<Session>: fbSession variable

Name of fbSession variable corresponding to the connection to initialize.

Remarks

Starting the session

<fbSession variable>.Start authenticates users on a Facebook server. This function initializes the connection with the server and must be called before any interaction with Facebook.
A login window appears automatically.
The function uses the Facebook account entered by the user on the phone (if it is specified).
A single session can be started at a time. If <fbSession variable>.Start is called while a session is already open, the previous session will be closed.
The <fbSession variable>.Start function must only be called from the main the thread of the application.

Characteristics of the session

The "public_profile" permission is always required when starting a Facebook session. If this permission was not specified in the list of permissions for the fbSession variable passed as parameter to <fbSession variable>.Start, this permission will be automatically requested.

Closing the session

A started Facebook session is a persistent session: it will remain open:

until the application is closed.
until <fbSession variable>.Stop is called.

Incompatibility between the IE ActiveX (and oAuth2) and the use of .NET assembly

When an HTML control is used in WINDEV, this control uses the system "Microsoft Web browser" ActiveX. This ActiveX is also used by WINDEV for all OAuth2 authentications (Facebook, Twitter, Google, etc.) that require a validation for the connection via HTML code.

If an HTML control (or an OAuth2 authentication) and a ".Net"assembly are used in the same project, an incompatibility may occur between the .NET layers of Microsoft and the ActiveX.

An API can be used to manage this cohabitation. To do so, the following line of code must be used in the initialization code of the project or in the initialization code of classes or global procedure if the ".Net" object is initialized in the class or in the set of procedures:

// Used to manage the cohabitation between IE ActiveX and .NET
API("OLE32", "CoInitializeEx", Null, 2)

Component: wd280ggl.dll