App released with windeployqt not showing UI

Fausto01

Thank you guys, I'll try and give you an update asap

Fausto01

@kkoehne I've tried but nothing appears again. My application is compiled in release mode, do I have to build it in debug mode to see the output from dbgview?

JonB

@Fausto01
You should not need to compile for Debug in order to get the diagnostic output from setting environment variable QT_DEBUG_PLUGINS=1 when you run your application. Are you sure you did this correctly before launching your program, so many people seem to get this wrong?

Fausto01

@JonB this are the steps I've done:

Open dbgview.exe (should I do something else?)
Open a terminal in the installation folder of my application
On the terminal -> "set QT_DEBUG_PLUGINS=1"
On the terminal -> ./MyApp.exe
Check if dbgview.exe has printed something

Is it correct?

JonB

@Fausto01
Yes, those are the correct steps. I do not use Windows/dbgview so I do not know why you do bot see the diagnostics. I will leave it for @kkoehne to comment further.

Fausto01

Note: as i previously said, I've tried to create a file just after the creation of QApplication but the file was not created. Seems that the application is not starting, even if I see it running on the task manager

Fausto01

Ok I've tried to create a file before and after the creation of QApplication. The file before QApplication in created, the file after is not created because the app stucks in the creation of QApplication (after the creation I have a return 0 but the app is running on task manager). Any hint?

J.Hilk

@Fausto01 the obvious one, have you tried qt 5.15 ?
5.14 is no longer supported and may or may not have had bugs related to your issue :D

Fausto01

@J-Hilk No I don't, I will try and give you an update

Fausto01

@J-Hilk Seems that with Qt 5.15.2 the problem is solved... I don't know how much time I spent trying to solve. Thank you! I'll be back if I see some other issues :)