Hi, Are you sure that the backend is loaded properly? Check QOpcUaProvider::availableBackends() and/or whether the client creation causes any issues. Furthermore, I assume you have been using the documentation from Open62541 itself? The default build generates a shared library, which needs to be in your PATH to be found on runtime.
As a final comment, your question is rather on using Qt / QtOpcUa, while this list is intended for developing on Qt itself. Hence, let’s move any followup discussion to interest@qt-project.org<mailto:interest@qt-project.org> where user problems are tackled. BR, Maurice From: Development <development-bounces+maurice.kalinowski=qt...@qt-project.org> On Behalf Of Berna Sanchez Sent: Sunday, September 2, 2018 7:03 PM To: developm...@qt-project.org Subject: [Development] qt open62541 client connection signals doesn't receive from backend class Hello, I'm on a stuck with a problem and some help will be appreciated it. I've installed open62541 following this tutorial (Building On Windows – Mingw32) and seems like everything are ok, but when I try to connect my own client with a demo opcua server the QOpcUaClient::ClientState(Connecting) is always connecting state (no matter if server is running or not). Debugging I can see: -qopen62541backend.cpp: Open62541AsyncBackend::connectToEndpoint(const QUrl &url) is emitting signals correctly (connected when server is running or disconnected when not) so far I think it's ok. On other hand, qopcuaclientprivate.cpp: void pcUaClientPrivate::setStateAndError(QOpcUaClient::ClientState state, QOpcUaClient::ClientError error) seems like should receive the signals from backend class but it doesn't work, so client state still on connecting. I also tried with other compiler (“Qt 5.11.1 64-bit for Desktop (MSVC 2017)”) and still happen the same. I'm looking forward for your feedback. Thanks in advance. Regards. Berna.
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