[Pyobjc-dev] Subclassing NSTextField

[Steven D. A. <st...@ne...>]

Hi,

I may be having several misconceptions here, but I've looked at several
sources without success, so I thought I'd ask.  I want to examine the keys
that are typed into an NSTextField, so I subclassed NSTextField in IB.  In
IB, I drew an NSTextField and set its custom class to my new class.  Then in
Main.py I defined the class as follows:

class SearchTextField( AppKit.NSTextField ):

    #def init( self ):
    #    print "initializing SearchTextField"
    #    return self

    def keyDown_( self, the_event ):
        the_keys = the_event.characters()
        print "Received keys: ", the_keys

It was my understanding that this should be sufficient; the new
SearchTextField should use the class I defined.  But I don't see my
diagnostic message when I type.

I also tried uncommenting the init function above, also with no effect (i.e.
No diagnostic message when the app is starting up).  I have it commented out
because I assumed the standard init function the class inherits from
NSTextField was good enough.

On a related note, is there any mechanism to implement categories in pyobjc?
I thought this question had been asked before, but I couldn't find it in my
archive.

steve
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