4D v13.4

Is license available

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4D v13.4
4D Language Reference
Users and Groups
Is license available

Is license available 


 

Is license available {( license )} -> Function result 
Parameter Type   Description
license  Longint in Plug-in for which license validity testing is desired
Function result  Boolean in True if plug-in is available, otherwise False

The Is license available command lets you find out the availability of a plug-in. It is useful, for instance, for displaying or hiding functions requiring the presence of a plug-in.

The Is license available command can be used in three different ways:

  • The license parameter is omitted: in this case, the command returns False if the 4D application is in demonstration mode.
  • You pass one of the constants of the “Is License Available” theme in the license parameter:
    Constant Type Value
    4D Client SOAP License Longint 808465465
    4D Client Web License Longint 808465209
    4D Draw License Longint 808464694
    4D for ADO License Longint 808465714
    4D for MySQL License Longint 808465712
    4D for OCI License Longint 808465208
    4D for PostgreSQL License Longint 808465713
    4D for Sybase License Longint 808465715
    4D ODBC Pro License Longint 808464946
    4D SOAP License Longint 808465464
    4D View License Longint 808465207
    4D Web License Longint 808464945
    4D Write License Longint 808464697

    In this case, the command returns True if the corresponding plug-in has a license available. The command takes into account any licenses attributed in Design mode or via the SET PLUGIN ACCESS command.
    Is license available returns False if the plug-in is operating in demo mode.
  • You pass the ID number of the plug-in “4BNX” resource directly in the license parameter. In this case, the command behaves as described above.

 
PROPERTIES 

Product: 4D
Theme: Users and Groups
Number: 714

 
INDEX

Alphabetical list of commands

 
HISTORY 

Modified: 4D 2004

 
SEE ALSO 

Get plugin access
PLUGIN LIST
SET PLUGIN ACCESS