Qt::ApplicationInactive breaks compilation

[Stephan Witt]

Am 08.02.2021 um 08:47 schrieb Pavel Sanda <sanda at lyx.org>:
> 
> Hi Stephan,
> 
> I can't compilet any longer on older Qt:
>  CXX      GuiApplication.o
> GuiApplication.cpp:1015:6: error: 'ApplicationState' in namespace 'Qt' does not 
> name a type              
>  Qt::ApplicationState last_state_;
>      ^                  
> GuiApplication.cpp: In constructor 'lyx::frontend::GuiApplication::Private::Priv
> ate()':                  
> GuiApplication.cpp:947:29: error: class 'lyx::frontend::GuiApplication::Private'
> does not have any field named 'last_state_'
>   global_menubar_(nullptr), last_state_(Qt::ApplicationInactive)
>                             ^
> GuiApplication.cpp:947:41: error: 'ApplicationInactive' is not a member of 'Qt'
>   global_menubar_(nullptr), last_state_(Qt::ApplicationInactive)
> 
> Could you ifdef last_state_ in the same way you do it with connect?

I did it. 

Stephan

> 
> Thanks,
> Pavel
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