NSMenuItem的自定义视图中的可编辑NSTextField

Question

I have a subclassed NSView that I would like to contain an editable NSTextField, similar to Spotlight.

I am having significant difficult getting the text field to select and highlight. If I click quickly and rapidly over the editing area of the textfield, I can actually enter text, but it appears greyed out, as though I am adding text to a field of an app that is not foremost.

I have tried to get focus of the View's window using viewDidMoveToWindow , but apparently NSMenuItem's windows are carbon windows that don't handle keys very well.

Long story short, what is a good way to go about making this work successfully? I know that Spotlight is a borderless window, but that is not suitable for my purposes.

Any and all suggestions would be very helpful.

Answer 1

After much research, two things are common consensus:

(1) If you find yourself looking for ways to subclass a built-in UI element for special the chances are that you're doing something wrong, or at very least, there is a better way to do what you're trying to do.

(2) The reason to follow the interface guidelines is to be more future-compatible. There is no guarantee that a sub-classed UI element will be compatible with future versions of the OS.

Brass Tacks - subclassing UI elements is generally not advised.

Answer 2

You might want to check out Matt Gemmell's MAAttachedWindow.

http://mattgemmell.com/2007/10/03/maattachedwindow-nswindow-subclass