[Python知识库] qml python slot

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[Python知识库]qml python slot

Then your main.py would look like this

#!/bin/env python3
# -*- coding: utf-8 -*-
from PyQt5.QtCore    import pyqtSlot
from PyQt5.QtCore    import QUrl
from PyQt5.QtQuick   import QQuickView
from PyQt5.QtWidgets import QApplication
import sys

class MainWindow(QQuickView):
    def __init__(self):
        super().__init__()
        self.setSource(QUrl('sample.qml'))
        self.rootContext().setContextProperty("MainWindow", self)
        self.show()

    @pyqtSlot('QString')
    def Print(self, value):
        print(value)

if __name__ == '__main__':
    app = QApplication(sys.argv)
    w = MainWindow()
    sys.exit(app.exec_())

And sample.qml like so

import QtQuick          2.0
import QtQuick.Controls 2.2

Rectangle {
    width: 200; height: 200

    Button {
      text: "print Hello World"
      onClicked: MainWindow.Print('hello world')
    }
}

You can find more information in the docs

http://pyqt.sourceforge.net/Docs/PyQt5/signals_slots.html