[Qt-interest] QStatemachine: Enter state and assignProperty() issue

[Samuel Gaist]

On 18 mars 2011, at 15:08, Mandeep Sandhu wrote:

> Hi All,
> 
> I'm using QSM to control some GUI widgets in an application. I use the
> property assignment feature of QSM to make a widget "visible" (using
> QWidgets visible property), when its in the state that the widget
> represents and, "invisible" when its not.
> 
> I also use the QState::onEnty()/onExit() callbacks to do some actions
> specific to a state.
> 
> The widgets attached to a state expect to be visible when the SM
> enters the state. But I found that the property assignment happens
> once I return from the onEntry() callback. So any widget that expects
> itself to be visible, will not be when we enter the state.
> 
> How should such a situation be handled? Should I call the widgets
> enter/exit state callbacks using a Timer and not directly from
> QState::onEntry()/onExit() functions? Whats a reliable place to assume
> that all property assignments have taken place?
> 
> Thanks,
> -mandeep
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Hello,
You might have some success using:
http://doc.qt.nokia.com/4.7/qstate.html#propertiesAssigned

Hope this helps
Samuel