Re: How to determine if a view is active
Re: How to determine if a view is active
- Subject: Re: How to determine if a view is active
- From: Daniel Jalkut <email@hidden>
- Date: Wed, 4 Jun 2003 13:28:39 -0700
Hi Christoph - I believe what you're asking is how to know when you
have become "first responder" (in Carbon it's "focused").
Look at the acceptsFirstReponder method of NSResponder. If you
override that method to return YES, then you should receive a
"becomeFirstResponder" method call when your view is being "focused" in
the UI. You might not even need to do the outline drawing, because
your superclass might do it for you, I'm not sure.
Daniel
On Wednesday, June 4, 2003, at 08:58 AM, Christoph Gerdes wrote:
Hi,
I subclassed an NSImageView to add drag and drop capabilities. Now
I want to highlight the view if it gets clicked on. (Pretty much like
iPhoto draws a blue rectangle arround a picture once you clicked on it)
Of course if the view is no longer active the surrounding rectangle
shall vanish. Drawing the rectangle itself is no problem but how can
I find out whether the view is active or not?
This might be documentated somewhere but I wasn't able to find it,
maybe
because I don't know what I am looking for. So a pointer to the right
document or keywords of what I'm actually looking for would help me
too.
Thanks in advance.
Christoph
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