User authentication / User restrictions for Qt-Gui
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Hallo,
I’m new on qt and in the forum.
At the moment I’m developing a HMI for a machine. For the HMI it’s necessary to have different users and user-levels. Another requirement is to have configurable restrictions for each widget(buttons, tables, … ). For each user-level I like to configure which widget is enabled or disabled.
My first idea was to use the object name (Qobject::objectName) of the widgets. In my approach there should be a list where the options (enable/disable) for each widget and each user-level is stored. On startup and when the user changed I look into the list and search the objectName of each gui-widget. Than I set the enable-property of each gui-widget.
At the moment I collect some ideas and make some drafts.
My Question:
What is the usual approach to handle users, user-level and user-accounts?
What would you recommend how I should handle the enable/disable property for the widgets?
Is there is a built-in mechanism in qt?
Do you know some good examples?Thanks for helping.
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Hi and welcome to devnet,
No there's no builtin mechanism for that.
As for users, user-level and accounts, that's usually done using a database where you have all that information.
As for handling of the widgets state you can e.g. use a custom event that you generate when the user changes and it's the responsibility of each widget to know what to enable disable based on the level of the new user.
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Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct -
I'm definitely interested in what you come up with!
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Me as well, especially the implications of disabling/hiding some widgets for some users and how you work around it.
