QML基本问题 求指导

[tt2com]

A.qml中一个function fuc（）
我将A放入B.qml中

Item{
    id: b
    width:100
    heigt: 100
    A{
    id: a1
    ???? //我想在此处调用fuc（） 该如何实现？
  }
}

[zhu_xz]

你指的调用，是象constructor一样的调用？还是被某个事件触发后调用？
文档这里有：http://qt-project.org/doc/qt-4.8/qdeclarativejavascript.html

[tt2com]

[Quote=引用 1 楼 的回复:]

你指的调用，是象constructor一样的调用？还是被某个事件触发后调用？
文档这里有：http://qt-project.org/doc/qt-4.8/qdeclarativejavascript.html
[/Quote]
类似constructor一样调用。

[Vegata]

Item{
id: b
width:100
heigt: 100
A{
id: a1
Component.onCompleted: fuc()
}
}
你说的那个位置这能这样了

[Vegata]

可以这样调用

Item{
id: b
width:100
heigt: 100
A{
id: a1
Component.onCompleted: func()
}
}

[tt2com]

Running JavaScript at StartupIt is occasionally necessary to run some imperative code at application (or component instance) startup. While it is tempting to just include the startup script as global code in an external script file, this can have severe limitations as the QML environment may not have been fully established. For example, some objects might not have been created or some Property Bindings may not have been run. QML JavaScript Restrictions covers the exact limitations of global script code.

The QML Component element provides an attached onCompleted property that can be used to trigger the execution of script code at startup after the QML environment has been completely established. For example:

Rectangle {
function startupFunction() {
// ... startup code
}

Component.onCompleted: startupFunction();
}Any element in a QML file - including nested elements and nested QML component instances - can use this attached property. If there is more than one onCompleted() handler to execute at startup, they are run sequentially in an undefined order.

Likewise, the Component::onDestruction attached property is triggered on component destruction.

[tt2com]

非常感谢