[SOLVED] How to disable a property:

  • Hi I am defining my own Qml Item in one file (Tile.qml) as like below.

    Rectangle {
    id : tile
    width: 100
    height: 100
    color : "red"
    property alias text : txt.text
    property alias bgColor : tile.color
    property alias fontColor : txt.color
    property alias fontSize : txt.font.pixelSize

    MouseArea {
        anchors.fill: parent
        onClicked: {
    Text {
        id : txt
        anchors.centerIn: parent


    and using this user defined item multiple times in another file like this
    spacing : 5
    spacing: 5
    Tile { id : obj11; text: "obj11"; bgColor : "red"; fontColor : "Yellow"}
    Tile { id : obj12; text : "obj12"; bgColor : "red"; fontColor : "Black"}
    Tile { id : obj13; text : "obj13"; bgColor : "red"; fontColor : "Black"}

            spacing: 5
            Tile { id : obj21; text: "obj21"; bgColor : "red"; fontColor : "Yellow"}
            Tile { id : obj22; text : "obj22"; bgColor : "red"; fontColor : "Black"}
            Tile { id : obj23; text : "obj23"; bgColor : "red"; fontColor : "Black"; width : 200}

    Here I am actually using the tile item multiple places and able to make changes on any property.
    But, I want to restrict the Tile width to 100 and height to 100 all the time. For that I want to disable these two properties so that they would not be accessible from outside. At the same time, I want to give control over all other properties.

    If I use nested Rectangle to define tile... in that case I supposed to do property alias for all other properties, that would be a over headache to me.

    How can I achieve this, any help is highly appreciable.

  • Hello, please use code tag is much better to read :) I'm not sure but set properties private is not possible in qml. But you can register the change event on this properties and override the value every time.

  • Moderators


    To add to dasRicardo's answer it is not possible for the built-in properties but for user-defined properties you can try "this":http://qt-project.org/doc/qt-4.8/qml-coding-conventions.html#private-properties way.

  • Please add [SOLVED] to thread title

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