Custom NSView with rounded corner:
To draw a custom view with its one or more corners round, all you need to do is draw a bezier path of the required shape in the view’s drawRect: method.
Also, this can be used to customize any NSView subclassed objects as NSTextView, NSTextField etc.
Here I present the code to create a text field with any one round corner as shown in the image below. The code can be easily changed to create more than one round corners of a view.
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