Qml Error: Cannot assign QObject* to QQuickItem

Question

我在 ApplicationWindow 中有一个带有 MouseArea 的矩形。通过单击鼠标区域，矩形的大小应该会增加，效果很好。但是以某种方式将矩形居中在 ApplicationWindow 的中间不起作用

import QtQuick 2.12
import QtQuick.Window 2.12
import QtQuick.Controls 2.5

ApplicationWindow {
    id: originalWindow
    visible: true
    width: 1920
    height: 1080
    title: qsTr("Bookshop Management System")


        Rectangle {
            id: searchUserButton
            x: 450
            y: 206

            radius: 10
            width: 200
            height: 200
            color: "#ccc8c8"

            MouseArea {
                anchors.fill: parent
                onClicked: {searchUserButton.width = 1100
                    searchUserButton.height = 600
                    searchUserButton.anchors.centerIn = originalWindow
                    rectangle2.visible = false
                    rectangle3.visible = false
                    rectangle4.visible = false
                    rectangle5.visible = false
                    rectangle6.visible = false
                }

            }

        }

错误代码是`错误：

Cannot assign QObject* to QQuickItem*

Answer 1

您已经设置了 searchUserButton 的宽度和高度，因此您只需正确设置该按钮的 x 和 y 坐标。

searchUserButton.x = (originalWindow.width - searchUserButton.width) / 2
searchUserButton.y = (originalWindow.height - searchUserButton.height) / 2

Qml Error: Cannot assign QObject* to QQuickItem

Qml Error: Cannot assign QObject* to QQuickItem

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