has a relationship in QML

Pradeep Kumar

hello

here is an example,

one.qml //filename

Rectangle
{

}


two.qml // filename

one
{

}

three.qml // filename

one
{

}


is this has a re;ationship or inhertance?.

benlau

inhertance

p3c0

Hi @Pradeep-Kumar
Honestly I too had never thought of inheritance and relationship in QML but Ill try to explain.
Accroding to your code:

Adding One in Two and Three makes a has-a relationship between them i.e Two and Three contains (has i.e has a relationship) One.
I think there is no inheritance in between them.

Now in QML terms according to me inheritance would be something like this:
One.qml

Rectangle {
 width: 50
 height: 50
 color: "red"
}

Two.qml

One {
 width: 200
 height: 200
 property string myProperty
 Text {
   anchors.centerIn: parent
   text: "Two"
 }
}

Now here Two extends One which means it extends the Rectangle plus has its own properties as well and also contains new element Text. If you run Two.qml you will see it will be of width and height 200 but it will have its color "red" which it inherited from One.qml. This means Two inherited the color property as well has have it own new properties.

Mereteran

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sarah168

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Solved has a relationship in QML