Dyanmic Id problem

ashajg

hi guys

I just came across a problem.
Is it possible to change id of qml on any event like mouseclick

example:

Window {
    //id:mainwindow
    visible: true
    width: 640
    height: 480
    title: qsTr("Hello World")
    Rectangle
    {
       id:four
       anchors.centerIn:parent
       height:100
       width:100
       color:"green"
       MouseArea
       {
       anchors.fill:parent
       onClicked:{parent.id="changed";console.log("parent id"+parent.id)}
       }
    }

}

actually in my main project I am using a qml and creating 4 objects using .js . Now I want unique ids for all 4 objects. Another problem is a single qml object will work for 2 modes so for each mode I want a unique id. how can I achieve this?

GrahamLa

Hi
From the docs

The id Attribute
Every QML object type has exactly one id attribute. This attribute is provided by the language itself, and cannot be redefined or overridden by any QML object type.

A value may be assigned to the id attribute of an object instance to allow that object to be identified and referred to by other objects. This id must begin with a lower-case letter or an underscore, and cannot contain characters other than letters, numbers and underscores.

ashajg

Hi @GrahamLa

Thanks for reply

What this line exactly means value may be assigned to the id attribute of an object instance to allow that object to be identified and referred to by other objects

Astrinus

That, if you do not assign a value to an object id, you cannot refer to the object. But it can be assigned only once.

JKSH

@ashajg said in Dyanmic Id problem:

Is it possible to change id of qml on any event like mouseclick

No. You can only set id at edit-time, not at run-time. id is always static; it is never dynamic.

I am using a qml and creating 4 objects using .js . Now I want unique ids for all 4 objects.

Store your objects in JavaScript variables (var). You can dynamically access your objects using JavaScript code.

Another problem is a single qml object will work for 2 modes so for each mode I want a unique id.

Store a "mode" enum. Change the enum when you change modes.

ashajg

@GrahamLa @JKSH @Astrinus thank you guys!!!