How to delete Graphics in QML

Question

Hi.

I try to delete Graphics in QML.

My code is

onMouseClicked: {
    clickPointBuilder.points.addPoint(cPoint)
    wayPointMakeGraphic.geometry = clickPointBuilder.geometry
    clickPointLineBuilder.addPoint(cPoint)
    wayPointLineMakeGraphic.geometry = clickPointLineBuilder.geometry
}

Item{
    focus: true
    if(event.key === Qt.Key_C){
        console.log("OK CLEAR")
        clickPointBuilder.points.removeAll()
        clickPointLineBuilder.parts.removeAll()
    }
}

But, This code have a flaw.

I want to delete it  when I press the C Key.

It will be deleted when I click the screen again after pressing the C key.

How to delete Graphics?

Nicholas-Furness · Accepted Answer

Simply updating the builder will not update the graphic's geometry. After you removeAll() on the builders, you need to set the geometry on wayPointMakeGraphic and wayPointLineMakeGraphic from the builders again, as you do in your onMouseClicked method. This should set the geometries on the graphics to valid, but empty geometries.