Accessing data of .qml file

[jeff28]

Hi, I have a .qml file that I am trying to read, for that I have the following lines (from my window.cpp file in the constructor):

viewer.setSource(QUrl::fromLocalFile("main.qml")); // viewer is a QDeclarativeView object
viewer.show();
QObject *object = viewer.rootObject();
QObject *test = object->findChild<QObject*>("positionSlider");

viewer.setSource(QUrl::fromLocalFile("main.qml")); // viewer is a QDeclarativeView object
viewer.show();
QObject *object = viewer.rootObject();
QObject *test = object->findChild<QObject*>("positionSlider");

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There is an instance called positionSlider in my main qml. I would like to change the value of upper and lower boundaries of this slider from my .cpp file. Can you help me about this please because I don't know how to continue?? Note that in the main.qml code I have entered my own values which is below:

// Position Slider
Slider {
   id: positionSlider
   x: 25
   y: 454
   value: 0
   xMax:360
   minimum:-180
   maximum:180
}

// Position Slider
Slider {
   id: positionSlider
   x: 25
   y: 454
   value: 0
   xMax:360
   minimum:-180
   maximum:180
}

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[spirit]

Did you try an example described here?