How access QML label creator no - QML C++ file

Subject: C++ see the variable screen QML.

Error: Don't know how to do it.

Question: How do I access the QML file creator no - QML C++ labels?

or,

Not any related example or document API that I can read?

Mini code:

A C++ file to create QML

ApplicationUI::ApplicationUI (bb::cascades:Application * app)
: QObject (app)
{
QML = QmlDocument::create("asset:///main.qml").parent(this);

root = qml-> createRootObject();
App-> setScene (root);

}

Another C++ to show a QML screen variable.

Sensor:ensor (bb::cascades:Application * app)
: QObject (app)
{

VideoLabel = root->findChild ("videolabelname");
VideoLabel-> setProperty ("text", "2");
}

Thank you for your attention,

Thanks Pierre. I've read before, but not any idea for the issue.

I found a useful sample code.

https://developer.BlackBerry.com/Cascades/documentation/dev/integrating_cpp_qml/custom_control_tutor...

I have a solution to access label creator non - C++ file QML QML made the sample.

The key's value and setvalue().

Mini code for the solution:

CPP.

int sensor: value()
{
Return m_iValue;
}

Sub Sensor::setValue (int i)
{
name is the same as an instruction HPP WRITE Q_PROPERTY
m_iValue = i;
issue of valueChanged (m_iValue);
}

HPP.

Q_PROPERTY (int value READ WRITE setValue NOTIFY valueChanged)
public:

Sensor();
Virtual ~ Sensor() {}
QObject * videolabel;
Q_INVOKABLE
int value();
void setValue (int i);

signals:
void valueChanged (int);

private:
int m_iValue;

QML:

Button {}
ID: aButton
text: _app.value
onClicked: {}
_APP.ValueChanged.connect (aButton.onValueChanged);
_APP.value = _app.value + 1;
}
onValueChanged (val) {} function
aButton.text = "new value:"+ val;»
}
}

Tags: BlackBerry Developers

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