在NSView中放置位置 [英] Drop location in NSView
问题描述
我正在编写一个Cocoa应用程序（XCode 7.0.1），其中有一个NSTableView和一个NSView。设计该应用程序的原因是为什么我们可以将项目从NSTableView拖放到NSView中。
I'm writing a Cocoa Application (XCode 7.0.1) and within it, I have a NSTableView and a NSView. The application is designed in a why that we can drag and drop items from the NSTableView into the NSView.
拖放工作正常，但是我只能注册某些东西被放置在NSView上，而不是放置在NSView上。我想知道是否有一种方法可以在NSView框架中获得放置位置？
The drag and drop works properly, but I can only register that something is dropped on the NSView and not where in the NSView. I was wondering if there is a way to get the location of the drop within the frame of NSView?
我尝试了NSView可以拥有的所有鼠标事件，但它们没有似乎在拖动操作期间被调用。
I have tried all mouse events that NSView can have but they don't seem to be called during the drag operation.
更准确地说，我使用
- （NSDragOperation）draggingEntered :( id）sender;
和
- （BOOL）performDragOperation：（id）sender;
使用NSView接收拖动操作。
To receive the drag operation with NSView.
推荐答案
发件人符合NSDraggingInfo协议，并实现-（NSPoint）draggingLocation 。 [发送者draggingLocation] 返回鼠标指针在目标对象窗口的基本坐标系中的当前位置。
sender conforms to the NSDraggingInfo protocol and implements -(NSPoint)draggingLocation. [sender draggingLocation] returns the current location of the mouse pointer in the base coordinate system of the destination object’s window.
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