python - pyqt5 qml 信号槽连接

Answer 1

写在qml里，我用C++的代码作为例子，python的做法应该是类似的，首先把C++对象（或python对象）暴露给qml：
engine.rootContext()->setContextProperty("myContext", myContext);
myContext要继承QObject，然后在qml里connect，如:

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

    signal show(string text) 
    Component.onCompleted: {
        show.connect(myContext.print);
    }
    ...
}