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Visual Extend 12.0 User Manual
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Users with administrator rights can see currently logged under menu Tools/ Users Status. IP address and login
time are displayed. The column last login time always shows the last date and time when user had logged in, even
if the user is not currently logged in.
Depending of where VFX system tables reside, this feature uses different approach to identify if user is really
active now or for some reasons his connection had broken and login attempt is to re-enter the system, but not to
login simultaneously twice.
When DBF tables are used, the record for the user is locked all the time while he is logged in the system. In case
of broken connection or another emergency exit, record lock is automatically released and when user attempt to
login next time this action is not threat as multiple login.
When VFX tables reside in a SQL Server database, the system process Id is used to identify logged user. The
active SPID is kept in vfxusr table. On а login attempt is checked if the user is already logged in and if that
process is still active. In case of active process and if multiple login is disabled by the developer, user is not
allowed to log in the application.
7.4. User Groups
Along with former possibilities to define user rights, VFX offers a new way to manage user access to
application‟s modules using User Groups. A particular user can be member of one or more user groups. For user
groups can be defined access rights. When the user is member of more than group rights which every one of these
groups permits are combined and the user are granted rights of all user groups that he is member of.
Users with administrator rights (userlevel 1) can define user groups and specify access rights to every user group
for every form in the application. User rights are defined for all forms, included in Vfxfopen table.