topic Re: No map display in QWidget in Qt Maps SDK Questions

No map display in QWidget

NicolasDuboys — Wed, 15 Apr 2020 09:25:18 GMT

I build a very simple example from Qt Creator, without using Qml.

I test my license it seems to be OK, return 3 (Valid) and Initialize rturn true.

But nothing can be display on map (I try Raster, OpenstreetMap).

I have a flood on console with this message :

qt.network.monitor: Failed to subscribe to network connectivity events: "CoInitialize n’a pas été appelé."

qt.network.monitor: failed to start network status monitoring

Any ideas ?

Regards

Re: No map display in QWidget

LucasDanzinger — Wed, 15 Apr 2020 13:38:51 GMT

Do you have the OpenSSL libs somewhere in your path?

Re: No map display in QWidget

NicolasDuboys — Wed, 15 Apr 2020 14:03:43 GMT

Hello Lucas and thank for your answer.

It is woking now with 2 new dll : libcrypto-1_1-x64 & libssl-1_1-x64

I still have some flood in console :

qt.network.monitor: Failed to subscribe to network connectivity events: "CoInitialize n’a pas été appelé."

qt.network.monitor: failed to start network status monitoring

qt.network.monitor: Failed to subscribe to network connectivity events: "CoInitialize n’a pas été appelé."

qt.network.monitor: failed to start network status monitoring

...

But maps is visible !

Re: No map display in QWidget

LucasDanzinger — Wed, 15 Apr 2020 14:14:35 GMT

which version of Qt are you using? 5.12.4 or newer will require a newer version of OpenSSL - https://community.esri.com/community/developers/native-app-developers/arcgis-runtime-sdk-for-qt/blog/2019/07/01/qt-5124-requires-newer-version-of-openssl

On Windows those are libcrypto-1_1-x64.dll and libssl-1_1-x64.dll.

Re: No map display in QWidget

NicolasDuboys — Wed, 15 Apr 2020 14:17:06 GMT

Yes I have just modified my first answer, your are too quick

Still have some flood but maos is present

I usd qt 5.14.2.

Any ideas about the flood ?

Re: No map display in QWidget

LucasDanzinger — Wed, 15 Apr 2020 19:15:18 GMT

we see this error too. It seems to be something coming from Qt itself and we have not been able to identify any actual problems associated with the warning.

Re: No map display in QWidget

NicolasDuboys — Thu, 16 Apr 2020 05:51:12 GMT

OK great

Thank you for your help Lucas !