Menu
I just want to know do we have any concept access specifiers like private property in QML as we have in C++.
If not if would like to know in case i have about 10 properties in my QML component but i have to limit the access to only 2 properties. how can we achieve this scenario.
333
A property is an attribute of an object that can be assigned a static value or bound to a dynamic expression. A property's value can be read by other objects. Generally it can also be modified by another object, unless a particular QML type has explicitly disallowed this for a specific property.
The property type can be any type supported by QVariant, or it can be a user-defined type. In this example, class QDate is considered to be a user-defined type. Q_PROPERTY(QDate date READ getDate WRITE setDate) Because QDate is user-defined, you must include the <QDate> header file with the property declaration.
The QtObject type is a non-visual element which contains only the objectName property. It can also be useful for C++ integration, as it is just a plain QObject.
You should always use QObject::setProperty(), QQmlProperty or QMetaProperty::write() to change a QML property value, to ensure the QML engine is made aware of the property change.
There is no such builtin feature in QML itself, but here is Qt Quick Components approach:
Item {
property int sum: internal.a + internal.b
QtObject {
id: internal
property int a: 1
property int b: 2
}
}
Properties of 'internal' object are invisible outside of Item, but may be freely used inside of it.
128
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
