我有显示图像的 GUI，但是当我最小化或移动应用程序窗口时，图像被删除....如何将其回调，或如何防止它？以某种方式重绘一个小部件会破坏它？
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you could press the middle mouse-key in order to open a menu where you can click on refresh. This should refresh your window and redraw everything in there. You can use it to debug when your image is drawn and maybe find out why you don't see anything. But in general a little more information would be neat.
于 2012-09-06T05:23:19.287 回答