Pyqt5 && Qml Exporting Enum

Is it possible to export enum from Python to QML instance? class UpdateState(): Nothing = 0 CheckingUpdate = 1 NoGameFound = 2 Updating = 3 How I want to use it in

Solution 1:

It works fine, as long as the enum is registered with Q_ENUMS and defined inside a class registered with the QML engine. Here's a small example:

example.py

from sys import exit, argv

from PyQt5.QtCore import pyqtSignal, pyqtProperty, Q_ENUMS, QObject
from PyQt5.QtQml import QQmlApplicationEngine, qmlRegisterType
from PyQt5.QtGui import QGuiApplication


classSwitch(QObject):

    classState:
        On = 0
        Off = 1

    Q_ENUMS(State)

    stateChanged = pyqtSignal(State, arguments=['state'])

    def__init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self._state = Switch.State.Off

    @pyqtProperty(State, notify=stateChanged)defstate(self):
        return self._state

    @state.setterdefstate(self, state):
        if state != self._state:
            self._state = state
            self.stateChanged.emit(self._state)


app = Nonedefmain():
    global app

    app = QGuiApplication(argv)

    qmlRegisterType(Switch, 'Switch', 1, 0, 'Switch')

    engine = QQmlApplicationEngine()
    engine.load('example.qml')

    exit(app.exec_())


if __name__ == '__main__':
    main()

example.qml

import QtQuick 2.0
import QtQuick.Window 2.0

import Switch1.0

Window {
    title: 'QML Enum Example'
    visible: true
    width: 400
    height: 400

    color: colorSwitch.state === Switch.On ? "green" : "red"Switch {
        id: colorSwitch
        state: Switch.Off
    }

    Text {
        text: "Press window to switch state"
    }

    MouseArea {
        anchors.fill: parent

        onClicked: {
            if (colorSwitch.state === Switch.Off)
                colorSwitch.state = Switch.On
            else
                colorSwitch.state = Switch.Off
        }
    }
}

Hope that helps.