【pyside6-qml】qml与python交互

main.py

# This Python file uses the following encoding: utf-8
import sys
from pathlib import Path

from PySide6.QtGui import QGuiApplication
from PySide6.QtQml import QQmlApplicationEngine
from PySide6.QtCore import QObject, Slot

class PythonLogic(QObject):
    @Slot()
    def say_hello(self):
        print("Hello from Python!")


if __name__ == "__main__":
    app = QGuiApplication(sys.argv)
    engine = QQmlApplicationEngine()

    logic = PythonLogic()
    engine.rootContext().setContextProperty("pythonLogic", logic)

    qml_file = Path(__file__).resolve().parent / "main.qml"
    engine.load(qml_file)
    if not engine.rootObjects():
        sys.exit(-1)
    sys.exit(app.exec())

关键代码：

1. 导入对象和方法包

from PySide6.QtCore import QObject, Slot

2. 自定义对象：注意 @Slot()

class PythonLogic(QObject):
    @Slot()
    def say_hello(self):
        print("Hello from Python!")

3. 注册对象

    logic = PythonLogic()
    engine.rootContext().setContextProperty("pythonLogic", logic)

main.qml

import QtQuick
import QtQuick.Window
import QtQuick.Controls

Window {
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")

    Button {
        text: "Click me"
        onClicked: pythonLogic.say_hello()
    }
}

关键代码：

1. 导入控件包

import QtQuick.Controls

2. 添加控件调用对象方法

    Button {
        text: "Click me"
        onClicked: pythonLogic.say_hello()
    }

效果