QtQuick动态对象在不同的上下文中 [英] QtQuick dynamic object in a different context
问题描述
在我的qml中,我创建了一个C ++组件对象,但是无法找到如何引用创建后的对象。
In my qml I'm creating a C++ component object but can't figure out how to reference the object once it's created.
这里是qml创建一个OgreScene对象:
Here's the qml to create an OgreScene object:
MouseArea
{
anchors.fill: parent
function scene()
{
var scene = Qt.createQmlObject( "import Client.Plugin.Ogre 0.1; OgreScene{ id: pluginScene; engine: OgreEngine }", plugin );
console.log( "qml: init scene" );
pluginScene.init();
}
onClicked: scene()
}
当我运行它我得到:
Qt Debug: qml: init scene
Qt Warning: qrc:///client.qml:118: ReferenceError: pluginScene is not defined
:
import Client.Plugin.Ogre 0.1;
在没有导入的情况下找不到对象定义。这个导入已经在qml文件中完成了,因此它显示的内联qml是在一个单独的上下文中执行的文件。
It cannot find the object definition without an import. This import had already been done in the qml file so it appears the inline qml is in a separate context from the file it's executed from.
如何创建一个c ++组件对象与我的qml文件在同一上下文中?
How can I create a c++ component object in the same context as my qml file?
推荐答案
我有一个可行的解决方案。
I have a workable solution. Instead of trying to load the qml inline the loader item can be used to dynamically manage items.
这里的代码用于加载项目以响应鼠标点击:
Here's code to load an item in response to a mouse click:
MouseArea
{
anchors.fill: parent
function changePlugin()
{
// unload previously loaded plugin
pluginLoader.sourceComponent = undefined;
// load new plugin
pluginLoader.sourceComponent = myPlugin;
}
onClicked: changePlugin()
}
定义您要加载的内容,位于您要加载的位置:
Insert a definition of what you want to load, in the spot where you want to load it:
Component
{
id: myPlugin
YourCustomPlugin
{
// do initialization when the object is loaded
// I call the init method of my plugin
Component.onCompleted: init();
}
}
Loader { id: pluginLoader; }
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