Re: Initializing the GUI from a different thread

Hi Jeroen and all,
thanks for the quick answer!

Am 25.02.22 um 18:04 schrieb [email protected]:
> On 2022-02-25 09:48, Michael Behrisch wrote:
>> Dear all,
>> I have a question concerning setting up a multi threaded application.
>> We have an application (https://github.com/eclipse/sumo) which works
>> well if we initialize the FXApp and the main window from the main
>> thread but it I use another thread to initialize the GUI it does not
>> work any longer. The problem is that the application spawns more
>> threads which communicate with the main window using an event queue
>> (from the FXEX package:
>> https://github.com/eclipse/sumo/blob/main/src/utils/foxtools/FXThreadEvent.h) 
>>
>> but the main windows does not seem to get the signals any longer if we
>> start it from the secondary thread. The problem occurs only on
>> Windows, on Linux it works fine.
>>
>> We are using FOX 1.6.57 and any idea is welcome.
> 
> I always *strongly* discourage letting any other thread than the
> main GUI thread perform any GUI operations.
> 
> Reason is, on Windows, only the main thread can receive windows.

Just for my understanding: This means under windows it always needs to 
be the main thread which calls FXApp::run?

Best regards,
Michael