Элемент QML BindingThe Binding element allows arbitrary property bindings to be created. Далее... This element was introduced in Qt 4.7. СвойстваПодробное описаниеSometimes it is necessary to bind to a property of an object that wasn't directly instantiated by QML - generally a property of a class exported to QML by C++. In these cases, regular property binding doesn't work. Binding allows you to bind any value to any property. For example, imagine a C++ application that maps an "app.enteredText" property into QML. You could use Binding to update the enteredText property like this. TextEdit { id: myTextField; text: "Please type here..." } Binding { target: app; property: "enteredText"; value: myTextField.text } Whenever the text in the TextEdit is updated, the C++ property will be updated also. If the binding target or binding property is changed, the bound value is immediately pushed onto the new target. See also QtDeclarative. Описание свойств
The property to be updated. The value to be set on the target object and property. This can be a constant (which isn't very useful), or a bound expression.
This property holds when the binding is active. This should be set to an expression that evaluates to true when you want the binding to be active. Binding { target: contactName; property: 'text' value: name; when: list.ListView.isCurrentItem } |
Попытка перевода Qt документации. Если есть желание присоединиться, или если есть замечания или пожелания, то заходите на форум: Перевод Qt документации на русский язык... Люди внесшие вклад в перевод: Команда переводчиков |