QWebChannel compatibility problems

gpioloco

I tried to use the chat example with the following configuration:

Complier : MinGW 5.3.0 32bit
Qt version : Qt 5.7 MinGW 32bit

The example works fine with the configuration above.

My problem is that as soon as i use the following configuration :

Compiler : Microsoft Visual c++ Complier 10.0 (x86)
Qt version : Qt 5.4.1 (msvc2010_opengl)

The browser consoler returns the following error when i reload the chatclient.html file :

/invalid message received: {"data":{"chatserver":{"methods":[["deleteLater",3],["login",11],["logout",12],["sendMessage",13],["keepAliveResponse",14]],"properties":[[0,"objectName",[1,2],""],[1,"userList",[1,7],[]]],"signals":[["destroyed",0],["newMessage",5],["keepAlive",6],["userCountChanged",8]]}},"type":3}
QWebChannel.transport.onmessage @ qwebchannel.js:92

I used the exact same code with both configurations. Any suggestions how to fix this problem ??

SGaist

Hi and welcome to devnet,

As silly as it may sound: use the same version of Qt ? You are comparing 5.7 and 5.4.1, which makes a big delta. You should rather check the equivalent Qt 5.7 for visual studio.

gpioloco

@SGaist i cant really do that cause in the project i am planning to do i rely on other stuff thats needs to be complied with msvc2010

SGaist

In that case, you should go with the latest version of Qt still compilable with VS2010, which is likely 5.6 and is an LTS release.

gpioloco

@SGaist Can you send me a download link i cant find it on : https://www.qt.io/download-open-source/#section-2

mrjj

@gpioloco
hi i could only find
http://download.qt.io/archive/qt/5.5/5.5.1/qt-opensource-windows-x86-msvc2010-5.5.1.exe

Please have a look
http://download.qt.io/archive/qt/

gpioloco

@mrjj THANK YOU !
The version you linked worked