QML 类型的 Qt Remote Objects 提供构建远程对象网络所需的帮手块。通常,它们用于结合构成特定网络的自定义注册复制类型。
例如,考虑以下 .rep 文件:
class MyType { PROP(QString myProp="Hello World") };
可以将生成复本注册成 QML 类型:
qmlRegisterType<MyTypeReplica>("custom",1,0,"MyTypeReplica")
然后使用 QML 结合基本类型 Node:
import QtQuick 2.0 import QtRemoteObjects 5.15 import custom 1.0 Item { MyTypeReplica { id: myType node: Node { registryUrl: "local:registry" } } Text { text: myType.myProp } MouseArea { anchors.fill: parent onClicked: myType.pushMyProp("Updated Text") } }
Note that by default you cannot directly assign to a replica property, but rather use a
push
function. This is due to the potential problems that arise from the mix of declarative programming and asynchronous updates. Specifically, we want to avoid issues like the following:
myType.myProp = "Updated Text" console.log(myType.myProp) // logs "Hello World", as the new text has not yet been round-tripped
The QML types in this module can be imported into your application using the following import statement in your .qml file:
import QtRemoteObjects 5.15
Qt Remote Objects 网络主机节点 | |
Qt Remote Objects 网络节点 | |
为在 QML 中处理远程类型提供有用功能的全局对象 | |
用于持久化特性的基本存储 |