QtObject QML Type

基本的なQML型。詳細...

Import Statement:	`import QtQml`
In C++:	QObject
Inherited By:	135 types AbstractButton, Action, ActionGroup, AllOfFilter, AnimatedImage, AnimatedSprite, AnyOfFilter, BorderImage, BusyIndicator, Button, ButtonGroup, Calendar, Canvas, CheckBox, CheckDelegate, ColorGroup, ColorOpacityAnimation, Column, ColumnLayout, ComboBox, Container, Control, DayOfWeekRow, DelayButton, Dial, Dialog, DialogButtonBox, DoubleSpinBox, Drawer, DropArea, EllipseShape, FilterBase, FlexboxLayout, Flickable, Flipable, Flow, FocusScope, Frame, FunctionFilter, FunctionSorter, Grid, GridLayout, GridView, GroupBox, HorizontalHeaderView, HorizontalHeaderViewDelegate, Image, ImageParticle, Item, ItemDelegate, ItemGrabResult, ItemParticle, Label, LayoutItemProxy, ListView, Loader, MaskShape, Menu, MenuBar, MenuBarItem, MenuItem, MenuSeparator, MonthGrid, MouseArea, MultiEffect, MultiPointTouchArea, Overlay, Page, PageIndicator, Palette, Pane, ParticlePainter, PathView, PinchArea, Popup, ProgressBar, RadioButton, RadioDelegate, RangeFilter, RangeSlider, Rectangle, RectangularShadow, RegExpFilter, Repeater, RoleFilter, RoleSorter, RoundButton, Row, RowLayout, ScrollBar, ScrollIndicator, ScrollView, SearchField, SelectionRectangle, Settings, ShaderEffect, ShaderEffectSource, Shape, Slider, Sorter, SpinBox, SplitHandle, SplitView, SpriteSequence, StackLayout, StackView, StandardPaths, StringSorter, SwipeDelegate, SwipeView, Switch, SwitchDelegate, SystemInformation, TabBar, TabButton, TableView, TableViewDelegate, Text, TextArea, TextEdit, TextField, TextInput, ToolBar, ToolButton, ToolSeparator, ToolTip, TreeView, TreeViewDelegate, Tumbler, ValueFilter, VectorImage, VerticalHeaderView, VerticalHeaderViewDelegate, WeekNumberColumn, and WindowContainer

継承されたメンバーを含む、すべてのメンバーの一覧

プロパティ

objectName : string

詳細説明

QtObject 型は、objectName プロパティのみを含む非視覚的要素です。

一連のカスタムプロパティを囲むために、極めて軽量な型が必要な場合には、QtObject を作成すると便利です:

import QtQuick

Item {
    QtObject {
        id: attributes
        property string name
        property int size
        property variant attributes
    }

    Text { text: attributes.name }
}

また、単なるQObject であるため、C++との統合にも役立ちます。詳細については、『QObject 』のドキュメントを参照してください。

プロパティのドキュメント

objectName : string

このプロパティは、この特定のオブジェクトインスタンスのQObject::objectName を保持します。

これにより、C++ アプリケーションは `QObject::findChild()` メソッドを使用して、QML コンポーネント内のアイテムを特定することができます。たとえば、次の C++ アプリケーションは、子アイテム `Rectangle ` を特定し、その `color ` 値を動的に変更しています:

// MyRect.qml

import QtQuick 2.0

Item {
    width: 200; height: 200

    Rectangle {
        anchors.fill: parent
        color: "red"
        objectName: "myRect"
    }
}

// main.cpp

QQuickView view;
view.setSource(QUrl::fromLocalFile("MyRect.qml"));
view.show();

QQuickItem *item = view.rootObject()->findChild<QQuickItem*>("myRect");
if (item)
    item->setProperty("color", QColor(Qt::yellow));

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