Qt 5.9.6 QWebChannel register objects after already registered others in another context

Rafael Silva

At some I need to register some objects with qwebchannel and futher in the application I need to register a new object to the qwebchannel. The thing is that it show no error to this new object but when I try to call the c++ from this new object nothing happens.

I do something like:

Register two objects at the beggining:

this->mWebView->mViewChannel->registerObject("object1", this);
this->mWebView->mViewChannel->registerObject("object2", this);

and

registerJsObject << R"(new QWebChannel(qt.webChannelTransport, function (channel) {)";
    registerJsObject << R"window.object1 = channel.objects.object1";
    registerJsObject << R"window.object2 = channel.objects.object2";
    registerJsObject << R"(}))";
    page->runJavaScript(registerJsObject.join("\n"));

And with this in the Js side I can call all the functions from js to cpp with these objects. But at some time I need to register a new object, like:

this->mWebView->mViewChannel->registerObject("dialog", dialog);

and then I need instantiate again the others objects:

registerJsObject << R"(new QWebChannel(qt.webChannelTransport, function (channel) {)";
    registerJsObject << R"window.object1 = channel.objects.object1";
    registerJsObject << R"window.object2 = channel.objects.object2";
    registerJsObject << R"window.dialog = channel.objects.dialog";
    registerJsObject << R"(}))";
    page->runJavaScript(registerJsObject.join("\n"));

The problem is: I can use normally the old instantiated objects, but when I try to call the new object it doesn't fails but nothing happens on the Cpp side