Managing your Licenses

Why Licenses ?

To use eVision in your application, you need licenses to unlock the tools functionalities.

Each eVision license unlocks one or more library, and all the tools included in that library.

Hint

You can find what license an eVision tool requires in the reference documentation of the associated classe(s).

Note

The BasicTypes license indicates that the functionality is unlocked whenever there is any eVision license available on the system.

Hint

You can also find what license(s) you need by using eVision Studio to prototype your application. eVision Studio does not require licenses, but will state which license(s) you need for your application in the code it generates.

Available Licensing Systems

eVision currently supports two licensing systems:

  • Neo, available on all supported platforms, and allowing licenses on both software containers and dongles. This is the recommended way to handle eVision licenses.

  • Legacy, available only for windows and for old-style dongles (before 2.13), available for backwards compatibility with older licenses.

Both systems can be used at the same time, but only Neo is recommended for new projects.

See also

For more information about the Neo Licensing System, you can check its documentation

Activating and Supporting the Licenses

eVision licenses are activated using the License Manager applications, which are installed alongside eVision.

There is one application for each of the licensing systems:

  • The Neo License Manager for Neo licenses.

  • The Legacy License Manager for legacy licenses.

The applications allow you to activate, but also check and support eVision licenses on your system.

Selecting a Licensing System

You can select the eVision licensing systems(s) that you use with your application. By default, both are enabled.

Hint

Selecting only one system avoids the delays that are sometimes added by the initialization of licensing systems you do not use.

The SelectLicensingModel function

  • To select the licensing models to enable with eVision, call the following function: Preconfiguration::SelectLicensingModels(ELicensingModel model)

  • Always call it before any other eVision function as calling it after the first call to eVision has no effect.

  • The SelectLicensingModels function takes a single argument:

    • The licensing models to enable, as described by the ELicensingModel enumeration.

The ELicensingModel enumeration

  • The ELicensingModel enumeration contains the different licensing models you can enable within eVision:

    • Neo: the current licensing model.

    • LegacyDongle: the legacy licensing model associated to the dongles used before 2.13.

    • All (default): this licensing model enables all the others (Neo + LegacyDongle) (default value).