如何在QML中创建CandlestickSet对象实例?

Question

我能够更改CandlestickSeries元素，但不能在QML中添加元素:

ColumnLayout
{
spacing: 5
anchors.fill: parent
ChartView {
title: "Candlestick series"
theme: ChartView.ChartThemeLight
legend.alignment: Qt.AlignBottom
antialiasing: true
Layout.fillWidth: true
Layout.fillHeight: true
CandlestickSeries {
id: series
name: "Acme Ltd."
increasingColor: "green"
decreasingColor: "red"
CandlestickSet { timestamp: 1435708800000; open: 6.90; high: 6.94; low: 5.99; close: 6.60 }
CandlestickSet { timestamp: 1435795200000; open: 6.69; high: 6.69; low: 6.69; close: 6.69 }
CandlestickSet { timestamp: 1436140800000; open: 4.85; high: 6.23; low: 4.85; close: 6.00 }
CandlestickSet { timestamp: 1436227200000; open: 5.89; high: 6.15; low: 3.77; close: 5.69 }
CandlestickSet { timestamp: 1436313600000; open: 4.64; high: 4.64; low: 2.54; close: 2.54 }
}
}
RowLayout
{
Layout.margins: 10
spacing: 5
Button
{
text: "Change 2"
onClicked: series.at(2).open = 3
}
Button
{
text: "Change 4"
onClicked: series.at(4).open = 3
}
Button
{
id: addButton
text: "Add"
onClicked: series.append( /*create new CandlestickSet here*/ )
}
}
}

如何在addButton按钮点击处理程序中创建CandlestickSet对象?

Answer 1

你必须使用Qt.createQmlObject:

onClicked: {
var set = Qt.createQmlObject('import QtCharts 2.15; CandlestickSet {}', series, "dynamicSnippet1");
set.timestamp = 1436227300000; 
set.open = 6.90
set.high = 6.94
set.low = 5.99
set.close = 6.60
var ret = series.append(set)
}