我对使用 Qt Quick Controls 2 的弹出窗口大小行为有一些问题。当我将 ListView 作为弹出窗口的 contentItem 时,弹出窗口大小为零。一些重现问题的示例代码:
import QtQuick 2.4
import QtQuick.Controls 2.0
import QtQuick.Layouts 1.3
ApplicationWindow {
id: window
visible: true
width: 800
height: 600
Button {
text: "open popup"
onClicked: popup.open()
}
Popup {
id: popup
x: (window.width - width) / 2
y: window.height / 6
width: contentWidth
height: contentHeight
contentItem: ListView {
width: contentWidth
height: contentHeight
model: ListModel {
ListElement {
name: "Apple"
cost: 2.45
}
ListElement {
name: "Orange"
cost: 3.25
}
ListElement {
name: "Banana"
cost: 1.95
}
}
delegate: RowLayout {
Label {
text: name
}
Label {
text: cost
}
}
}
}
}
如何使弹出窗口适应 ListView 的大小?