Rectangle width is '0' if i try to access in "Component.OnCompleted"

pra7

Hello all i want to get the width of a rectangle in "Component.OnCompleted" .Following is my code:

main.qml

import QtQuick 2.6
import QtQuick.Controls 2.2
import QtQuick.Window 2.3

ApplicationWindow {
    id: appWindow
    visible: true
    width: 600
    height: 400
    title: qsTr("test")
    flags:  Qt.Window | Qt.FramelessWindowHint
    
    MyRect{
        id:rect
    }
}

MyRect.qml

import QtQuick 2.6
import QtQuick.Controls 2.2

Rectangle{
        id:rectParent
        anchors.fill:parent
        Rectangle{
            id:rectChild
            width:parent.width * 0.75
            height: parent.height * 0.70
            Component.onCompleted: {
                console.log("Width=",width) //prints "0" .
                //code to create component follows  and i need the width.
            }
        }
    }

What is the approach that i should use to create a component on completion? i can't use timers.

pra7

@LeLev Thanks , I will try the same .

Eeli K

@pra7 Have you tried moving the code to rectParent's Component.onCompleted?

ODБOï

Hi,
There is an concatenation error in 'MyRect.qml' :

Component.onCompleted: {
         
                         console.log("Width=",width) //prints "0" .  //  <<< Error here
           
        }

Should be :

Component.onCompleted: {

                         console.log("Width=" + width) //prints "0" .  //  '+'  and not   ' , '               
        }

LA

pra7

@LeLev That doesn't make any difference

pra7

@Eeli-K Even there it's the same .. I am getting width has '0'

ODБOï

Oh sorry, i just tested console.log("Width=",width) and it works. My bad.

ODБOï

Replace 'parent' by parents id

/** MyRec.qml **/
import QtQuick 2.6

Rectangle{
id:rectParent

    color: "grey"
    property alias _recChildW : rectChild

Rectangle{
        id:rectChild
        width:rectParent.width * 0.75  // parent id
        height: rectParent.height * 0.70 //   parent id

    }


}

/Main/
import QtQuick 2.7
import QtQuick.Controls 2.0
import QtQuick.Layouts 1.3

ApplicationWindow {
id:root
visible: true
width: 640
height: 480
title: qsTr("Hello World")

    MyRec{
              id: customRec
            height:root.height // here : parent id
            width:root.width   // here  : parent id

            Component.onCompleted:  console.log("width " + _recChildW.width) 

        }

}

pra7

@LeLev Thanks , I will try the same .