id-shadows-member.qdoc

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// Copyright (C) 2026 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only
 
/*!
\page qmllint-warnings-and-errors-id-shadows-member.html
\ingroup qmllint-warnings-and-errors
 
\title Id shadows member
\brief [id-shadows-member] An id shadows a member.
 
\qmllintwarningcategory id-shadows-member
 
\section1 Id shadows property, method or signal
 
\section2 What happened?
An id is potentially shadowing a property, method, or signal in the same context.
 
\section2 Why is that bad?
You can't access the property, method, or signal by its unqualified name anymore. Code that
used to do so will silently access the id instead, potentially leading
to hard-to-spot bugs.
 
\section2 Example
\qml
import QtQuick
 
Item {
    Item { id: helloWorld }
    property int helloWorld: 42
    Component.onCompleted: console.log(helloWorld) // not 42
}
 
\endqml
To fix this warning, rename the id or the shadowed member.
 
\qml
import QtQuick
 
Item {
    Item { id: helloWorldId }
    property int helloWorld: 42
    Component.onCompleted: console.log(helloWorld) // now 42
}
\endqml
 
*/