This is my set up
QDeclarative view
-Main.qml

QDeclarativeItem is added to view->rootobject
QDeclarativeItem
-testHelper.qml (Its here where the signals are)

Main.qml
@Rectangle {
id: container
width: 800
height: 600
color: "white"
}@

Qml file for item where the signals are.
@
import QtQuick 1.1

Rectangle {
id: rect
objectName: "Button"
signal newPositionSignal(string position)
signal deleteSignal(string objectName)
signal selectedSignal(string objectName)

onNewPositionSignal: {
console.log('newPositionSignal: ' + position);
}

onDeleteSignal: {
console.log('deleteSignal: object "' + objectName + '"" deleted');
}
onSelectedSignal: {
console.log('selectedSignal: object "'+ rect.objectName + '"" selected');
content.border.color = "blue"
}

Rectangle {
id: content

width: childrenRect.width
height: childrenRect.height
border.color: "black"
border.width: 2
color: "transparent"

Component.onCompleted: {
var component = Qt.createComponent("../Indicators/TankLevel.qml");
if (component.status === Component.Ready) {
var button = component.createObject(content);
}
}

MouseArea {
id: contentMouseArea
anchors.fill: parent
drag.target: parent
onClicked: {
rect.selectedSignal(rect.objectName);
}
onReleased: {
rect.newPositionSignal(rect.objectName+','+ parent.x+','+ parent.y+','+ parent.z);
}
}
}

Rectangle {
id: remove
width: 20
height: 20
color: "black"
anchors.right: content.right
anchors.top: content.top

Text {
anchors.centerIn: parent
text: "X"
color: "white"
}

MouseArea {
anchors.fill: parent
onClicked: {
rect.deleteSignal(rect.objectName);
rect.destroy();
}
}
}
}
@

Setting up declarativeview
@
qmlPath = path;
view = new QDeclarativeView(this);
view->setSource(QUrl::fromLocalFile(path));

view->setResizeMode(QDeclarativeView::SizeViewToRootObject);

viewerManager vManager(cMan);
vManager.setRootObject(view->rootObject());
QObject::connect(view->engine(), SIGNAL(quit()), view, SLOT(close()));

@

Function for inserting item to the view
@
QDeclarativeComponent testcomponent(view->engine());
testcomponent.loadUrl(QUrl::fromLocalFile("testHelper.qml"));
QDeclarativeItem* testcomp = qobject_cast<QDeclarativeItem *>(testcomponent.create());
testcomp->setParent(view->rootObject());
testcomp->setParentItem(qobject_cast<QDeclarativeItem *>(view->rootObject()));
QDeclarativeEngine::setObjectOwnership(testcomp, QDeclarativeEngine::JavaScriptOwnership);
@

Class that handles qml signals
@
viewerManager::viewerManager(QObject *parent) :
QObject(parent), mRoot(0)
{
}

viewerManager::viewerManager(componentManager *component, QObject *parent) :
QObject(parent), mRoot(0)
{
mComponent = component;
}

void viewerManager::setRootObject(QObject *root){
if (mRoot != 0) disconnect(mRoot);

mRoot = root;

if(mRoot){
    connect(root, SIGNAL(newPositionSignal(QString)), this, SLOT(newPositionSignal(QString)));
}

}
void viewerManager::newPositionSignal(QString pos){
qWarning() << "Got signal";
}
@