与UI分离的QT/QML业务逻辑
我试图将业务逻辑放在与UI分离的QT/QML业务逻辑,qt,qml,qt-signals,Qt,Qml,Qt Signals,我试图将业务逻辑放在Main.qml中,将UI放在MainForm.UI.qml中,但我无法通过小部件id将两者连接起来 MainForm.ui.qml: import QtQuick 2.8 import QtQuick.Controls 2.2 import QtQuick.Layouts 1.3 Page { id: page header: TabBar { ... } StackLayout { id: stack Pane {
Main.qml
中,将UI放在MainForm.UI.qml
中,但我无法通过小部件id将两者连接起来
MainForm.ui.qml:
import QtQuick 2.8
import QtQuick.Controls 2.2
import QtQuick.Layouts 1.3
Page {
id: page
header: TabBar { ... }
StackLayout {
id: stack
Pane {
Flow {
TextField {
id: theText
}
property alias sendBtn: sendBtn
Button {
id: sendBtn
}
}
}
}
}
Main.qml:
import QtQuick 2.8
import QtQuick.Window 2.2
Window {
visible: true
width: 640
height: 480
title: qsTr("Hello World")
MainForm {
anchors.fill: parent
sendBtn {
onClicked: backend.sendTextToServer( theText.text )
}
}
}
Qt创建者说:无效的属性名“sendBtn”(M16)
运行失败,出现以下消息:
QQmlApplicationEngine failed to load component
qrc:/Main.qml:12 Cannot assign to non-existent property "sendBtn"
当您将
属性别名sendBtn:sendBtn
放在窗格内时,会将其解释为窗格属性,因此您无法以这种方式访问它,将其放在页面上下文中是正确的
import QtQuick 2.8
import QtQuick.Controls 2.2
import QtQuick.Layouts 1.3
Page {
id: page
property alias sendBtn: sendBtn
property alias theText: theText
header: TabBar { ... }
StackLayout {
id: stack
Pane {
Flow {
TextField {
id: theText
}
Button {
id: sendBtn
}
}
}
}
}