c++ - Access QML signal deep in the hierarchy -

i trying emit signal on completion of creating object. this:

component.oncompleted: mysignal() 

this in qml file deep in hierarchy. see 2 solutions accessing signal in c++.

first passing signal hierarchy until main.qml , in c++ this:

//create quick view object. qquickview *view = new qquickview();  //object access qml properties , childs. qobject *container = (qobject *) view->rootobject();  //connect signal , slots qobject::connect(container, signal(mysignal()), this, slot(onmysignal())); 

this have tried , reason slot not called. works other signals send , emit main.qml, not 1 emitted component.oncomplete. can verify signal emitted qml side, never received on c++ side.

the second thing tried instead of passing signal main.qml, reference qml file emitting signal want. tried doing so:

//create quick view object. qquickview *view = new qquickview();  //object access qml properties , childs. qobject *container = (qobject *) view->rootobject();  //connect signal , slots qobject::connect(container->findchild<qobject*>("mysignalqmlfile"), signal(mysignal()), this, slot(onmysignal())); 

where mysignalqmlfile id of main rectangle has signals defined within it.

and error:

qobject::connect: no such signal qquickrectangle_qml_54::mysignal() in ..\gc\mainwindow.cpp:62

i not sure how proceed.

for first try, think possible signal emitted before connect signal , slot never received signal.

for second try, need use objectname qml file, not "mysignalqmlfile".

i recommend read following tutorial.

http://developer.nokia.com/community/wiki/using_objectname_to_find_qml_elements_from_qt

also, qml file needs called or used before connect signals , slot. otherwise, not able find object same error.