<fbSession variable>.Start (Function)

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Starting the session
Characteristics of the session
Stopping the session
Incompatibility between the IE ActiveX (and oAuth2) and the use of .NET assembly

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<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.

Versions 22 and later

This function is now available for WEBDEV sites in Linux.

This function is now available for WEBDEV sites in Windows.

New in version 22

This function is now available for WEBDEV sites in Linux.

This function is now available for WEBDEV sites in Windows.

This function is now available for WEBDEV sites in Linux.

This function is now available for WEBDEV sites in Windows.

Example

MySession is fbSession
MySession.AppID = "1702546803104741"
MySession.AppSecret = "badf00ddeadbeefbadc0deoff1ce8ecd"
MySession.Permission = [fbInfoProfile, fbEmail]
IF MySession.Start() THEN
Info("Connected")
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 it must be called before any communication with Facebook.
A window allowing the user to type his login and password is automatically opened.
The function is using the Facebook account entered by the user on the phone (if this account 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.

Stopping the session

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

until the application is closed.
until the call to <fbSession variable>.Stop.

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

When an HTML control is used in WINDEV, this control is using 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: wd270ggl.dll