[SOLVED]How to write onMinimunScaleCange event handler on PinchArea

dFrontia

in PinchArea property pinch.minimunScale.

i want to run script when change the minmunScale.

I know, properties has "on<property name>Changed" event handler.
but, Cant written onMinimunScaleChanged.

How write event handler of minimumScale property changed?

Adrien Leravat

Hi dFrontia,

bq. but, Cant written onMinimunScaleChanged.

What do you mean ? You cannot write it in place, or you wrote it but it didn't worked ?

If you cannot edit the component containing the PinchArea, then you can use a Connections object to handle the onMinimumScaleChanged. Have a look at the "QML Connections page":http://doc.qt.digia.com/4.7-snapshot/qml-connections.html

That would look like
@
Connections {
target: pinchArea
onMinimumScaleChanged {
// Handle here
}
}
@

dFrontia

Thanks for replay.

your replay has big hit!

This has been resolved.

correct code is....

@ PinchArea{
id:panelBase
anchors.fill: parent

    //minimumScale are enclosed in "pinch" -refer to PinchArea.
    pinch.minimumScale: width/height

    onWidthChanged: {
        console.debug("It came! width")
    }

    //How to write a successful
    Connections{
        target: panelBase.pinch
        onMinimumScaleChanged :{
            console.debug("It came onMinimunScaleChange!!")
        }
    }

    // I was challenged in the following description.
    // Cannot assign to non-existent propery
    //onMinimumScaleChanged :{
    //    consle.debug("It NOT came...")
    //}

}

@

Adrien Leravat

I'm glad it solved your problem !

But I'm also very intrigued it doesn't work in the first place. The "Connections" object do the exact same. In your sample you wrote "consle.debug", missing a "o". I guess in the real code you wrote it correctly ?

dFrontia

I had misspelled "console".
But it does not matter.

Following error when you perform a QML Viewer than that.

@D:\Qt\4.8.4\bin\qmlviewer.exe D:/DEV/Demo/PinchAreaTest/PinchAreaTest.qml を起動中
file:///D:/DEV/Demo/PinchAreaTest/PinchAreaTest.qml:28:9: Cannot assign to non-existent property "onMinimumScaleChanged"
onMinimumScaleChanged :{
^
@

If the error has not occurred, would have pointed out errors are displayed.