Behavior QML Type

Defines a default animation for a property change 更多...

import 语句：

import QtQuick 2.7

所有成员列表，包括继承成员

特性

animation : Animation
enabled : bool

详细描述

A Behavior defines the default animation to be applied whenever a particular property value changes.

For example, the following Behavior defines a NumberAnimation to be run whenever the Rectangle 's width value changes. When the MouseArea is clicked, the width is changed, triggering the behavior's animation:

import QtQuick 2.0
Rectangle {
    id: rect
    width: 100; height: 100
    color: "red"
    Behavior on width {
        NumberAnimation { duration: 1000 }
    }
    MouseArea {
        anchors.fill: parent
        onClicked: rect.width = 50
    }
}

Note that a property cannot have more than one assigned Behavior. To provide multiple animations within a Behavior, use ParallelAnimation or SequentialAnimation .

若 state change 拥有 Transition that matches the same property as a Behavior, the Transition animation overrides the Behavior for that state change. For general advice on using Behaviors to animate state changes, see Using Qt Quick Behaviors with States .

另请参阅 Qt Quick 中的动画和过渡 , Behavior example ，和 Qt QML .

特性文档编制

[default] animation : Animation

This property holds the animation to run when the behavior is triggered.

enabled : bool

This property holds whether the behavior will be triggered when the tracked property changes value.

By default a Behavior is enabled.