Question

我是python和qml编程的初学者，我正在做一个项目我的项目需要有很多UI表单我正在使用qml来创建这些UI

假设我们有表格A，B，C，当申请加载我需要它打开表格A和表格A包含按钮，我点击并打开表格B和表格A关闭，表格B它有按钮，我点击它打开表格C，表格B关闭...... Plis帮助我完成这些项目

main.py

import sys
from PyQt5.QtCore import QObject, QUrl, Qt
from PyQt5.QtWidgets import QApplication
from PyQt5.QtQml import QQmlApplicationEngine

if __name__ == "__main__":
    app = QApplication(sys.argv)
    engine = QQmlApplicationEngine()
    ctx = engine.rootContext()
    ctx.setContextProperty("main", engine)


    ctx2 = engine.rootContext()
    ctx2.setContextProperty("main", engine)


    engine.load('form1.qml')
    win = engine.rootObjects()[0]
    def pageC():
        engine.load('form3.qml')
        win2 = engine.rootObjects()[0]
        button1 = win2.findChild(QObject, "form3")
        button1.clicked.connect(pageC)
        win2.show()

    def newPage():
        engine.load('form2.qml')
        win = engine.rootObjects()[0]
        win.show()




    button1=win.findChild(QObject, "form2")
    button1.clicked.connect(newPage)

win.show()
sys.exit(app.exec_())

form1.qml

import QtQuick 2.5
import QtQuick.Window 2.2
import QtQuick.Controls 1.5

Window {
    visible: true
    width: 200
    height: 200
    title: qsTr("Hello World")
    maximumHeight: 200
    minimumHeight: 200
    maximumWidth: 200
    minimumWidth: 200


    Button {
        id: button1
        objectName: "form2"
        x: 22
        y: 71
        width: 157
        height: 59
        text: qsTr("Page a")
        onClicked: callPageB()
    }
}

form2.qml

import QtQuick 2.5
import QtQuick.Window 2.2
import QtQuick.Controls 1.5

Window {
    visible: true
    width: 200
    height: 200
    title: qsTr("Hello World")
    maximumHeight: 200
    minimumHeight: 200
    maximumWidth: 200
    minimumWidth: 200


    Button {
        id: button1
        objectName: "form3"
        x: 22
        y: 71
        width: 157
        height: 59
        text: qsTr("Page B")
        onClicked: callPageC()
    }
}

form3.qml

import QtQuick 2.5
import QtQuick.Window 2.2
import QtQuick.Controls 1.5

Window {
    visible: true
    width: 200
    height: 200
    title: qsTr("Hello World")
    maximumHeight: 200
    minimumHeight: 200
    maximumWidth: 200
    minimumWidth: 200


    Button {
        id: button1
        x: 22
        y: 71
        width: 157
        height: 59
        text: qsTr("Page C")
    }
}

Answer 1

将qmls添加到QQmlApplicationEngine时我们可以通过rootObjects()，所以为了做到这一点，我只创建了以下类，但是有一些限制，Window中的每个按钮都应该有{{1作为文件的名称，必须是Window的子项：

<强> example.qml：

objectName

在下一部分中，这个类名为你的qmls。

Window {
    ...
    Button {
        objectName: "example"
    }
    ...
}

Python和QML上的多个页面

1 个答案: