Re: How to create a button dynamically and set action in subclass
Re: How to create a button dynamically and set action in subclass
- Subject: Re: How to create a button dynamically and set action in subclass
- From: "Anish Kumar" <email@hidden>
- Date: 7 Dec 2004 10:38:20 -0000
Hi John,
Thanks for your much needed help. I used your suggestion and was able to find a solution
for my problem.
I created a new nib file and added a button over window(a borderless window). Then I
changed the fileowners class as sub-class of NSWindow. In the application when the user
writes his comments for the image and saves it, I attach the new button window as a child
window to the window that display the image. So every time a user comments and saves it,
a button will sit over the original image indicating that there is a comment. Now if the user
clicks the button, I open a new window and display the comment that was stored for that
location.
Thanks once again John for your help,
-Anish,
http://indinfo.webpulsar.com/
On Mon, 06 Dec 2004 John Fox wrote :
>Hi Anish:
>
>I've done something similar, by using a "prototype" view that I instantiate from a nib file
and which is then positioned on screen over an NSImageView subclass. It's not terribly
difficult to do, and since I've gotten lots of help from people on the list at various times, I'd
be happy to help you with it.
>
>Essentially, in IB you want to create your view object with whatever UI elements you need
(a scrolling text field and/or a button, etc.). In that nib file: I suggest you create your own
subclass to be the File's Owner. This will make it possible to take care of loading the nib
file, take care of whatever configuration you need, etc. The File's Owner will also contain the
action methods you need for when a button is clicked, etc.
>
>To load the nib file, you use something like this in your class' init method:
>
> [NSBundle loadNibNamed: @"MyNiftyNibFile" owner: self];
>
>You'll want to make add this view to your NSImageView subclass by doing something like:
>
> if (![[myImageView subviews] containsObject:mySubview])
> {
> [myImageView addSubview:mySubview];
> }
>
>You will also need to set the location, and possibly adjust the size of this view using
NSView's setFrameOrigin: and setFrameSize: methods.
>
>Doubtless, there may be other approaches to solve this problem, but this technique has
worked well for me.
>
>Anyway, I hope this helps, and If not, feel free to get in touch, and I'll see if I can help you
some more.
>
>Take care,
>
>John
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