Custom binding problem...can't figure out how to trigger a notification on set
Custom binding problem...can't figure out how to trigger a notification on set
- Subject: Custom binding problem...can't figure out how to trigger a notification on set
- From: "E. Wing" <email@hidden>
- Date: Fri, 29 Sep 2006 00:12:02 -0700
Hello, I have a simple bindings problem I'm hoping somebody can help
me with. I have condensed down my problem into a simple example
program which I have posted here:
http://www.geocities.com/ewing2121/NotificationProblem.tgz
Basically, I have a custom view object with a property I want to bind.
In this case, it is color. I wish to bind my color property to the
NSColorWell widget.
My problem is that the bindings seem to only work in one direction. I
can change the color wheel from the NSColorWell and my view object
changes appropriately. But if I set my view object's color directly,
the NSColorWell does not seem to get the notification that I changed
the view color so it does update itself.
I don't know what I'm supposed to do to 'trigger' this notification.
Can some body tell me where I'm going wrong?
The example program has a custom view that paints the entire view the
specified color. If you click on the NSColorWell, you should be able
to change the view colors. If you click on the buttons labeled with
different color names, they change the view color, but the NSColorWell
will not change to keep in sync.
Thanks,
Eric
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