通过背景移动 NSPanel 并在其上添加一些 NSView
我有一个 NSPanel。当面板为空时，通过按住并拖动其背景可以很好地移动。但是，如果我在上面放一些东西，新视图覆盖的区域将不再可拖动。例如，我可以将 NSImageView 完全填充面板。并且面板不再被拖动。不过，我想让这个即使用户按住图像视图也可以拖动。我应该怎么做才能做到这一点？
I have a NSPanel. When the panel is empty, is moves well with holding and dragging it's background. However, If I put something on it, the area covered by new view won't be draggable anymore. As an example, I could put a NSImageView fills the panel fully. And the panel do not being dragged anymore. However I want to make this draggable even user holding on the image view. What should I do to do this?
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您必须对
NSImageView进行子类化并实现- (BOOL)mouseDownCanMoveWindow返回YES。然后您就可以将窗口拖动到您单击的任何位置。You have to subclass your
NSImageViewand implement- (BOOL)mouseDownCanMoveWindowto returnYES. Then you'll be able to drag the window wherever you click.