BusyIndicator QML Type

Indicates background activity, for example, while content is being loaded. 更多...

import 语句：	import QtQuick.Controls 2.2
Since:	Qt 5.7
继承：	Control

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特性

running : bool

详细描述

The busy indicator should be used to indicate activity while content is being loaded or the UI is blocked waiting for a resource to become available.

The following snippet shows how to use the BusyIndicator :

BusyIndicator {
    running: image.status === Image.Loading
}

BusyIndicator is similar to an indeterminate ProgressBar . Both can be used to indicate background activity. The main difference is visual, and that ProgressBar can also present a concrete amount of progress (when it can be determined). Due to the visual difference, busy indicators and indeterminate progress bars fit different places in user interfaces. Typical places for a busy indicator:

in the corner of a ToolBar
as an overlay on top of a Page
on the side of an ItemDelegate

另请参阅 Customizing BusyIndicator , 指示器控件，和 ProgressBar .

特性文档编制

running : bool

This property holds whether the busy indicator is currently indicating activity.

注意： The indicator is only visible when this property is set to true .

默认值为 true .