Indicates background activity, for example, while content is being loaded. 更多...
导入语句: | import QtQuick.Controls 2.2 |
Since: | Qt 5.7 |
继承: | Control |
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:
另请参阅 Customizing BusyIndicator , 指示器控件 ,和 ProgressBar .
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
.