或者用qml,看QT自带的demo里边demos/declarative/rssnews/content/BusyIndicator.qml 下边为具体代码
import Qt 4.7
Image {
id: container
property bool on: false
source: "images/busy.png"; visible: container.on
NumberAnimation on rotation {
running: container.on; from: 0; to: 360; loops: Animation.Infinite; duration: 1200
}
}