Qt怎么实现插入一张jpg，让这张图片一直旋转

，直到用户停止旋转？

To insert a JPG image and make it continuously rotate until the user stops it using Qt, you can use QPropertyAnimation to animate the rotation of the image. Here is an example code snippet:

// Create a QGraphicsPixmapItem for the image
QPixmap pixmap("image.jpg");
QGraphicsPixmapItem *item = new QGraphicsPixmapItem(pixmap);

// Add the item to a QGraphicsScene
QGraphicsScene *scene = new QGraphicsScene;
scene->addItem(item);

// Create a QPropertyAnimation to animate the rotation of the item
QPropertyAnimation *animation = new QPropertyAnimation(item, "rotation");
animation->setDuration(2000); // 2 seconds
animation->setStartValue(0);
animation->setEndValue(360);
animation->setLoopCount(-1); // Infinite loop
animation->start();

// Display the scene in a QGraphicsView
QGraphicsView *view = new QGraphicsView(scene);
view->show();

This code creates a QGraphicsPixmapItem for the image, adds it to a QGraphicsScene, and then creates a QPropertyAnimation to animate the rotation of the item. The setLoopCount(-1) method call makes the animation loop indefinitely. Finally, the scene is displayed in a QGraphicsView.