Re: Saving unseen NSView with subviews to NSImage
Re: Saving unseen NSView with subviews to NSImage
- Subject: Re: Saving unseen NSView with subviews to NSImage
- From: John Kestner <email@hidden>
- Date: Tue, 30 Dec 2008 13:50:58 -0500
On Dec 30, 2008, at 8:22 AM, Michael Ash wrote:
You make this brand-new view, and never put any subviews into it. It
should be pretty well obvious why no subviews ever show up....
Yeah, it started to dawn on me last night when NSLog(@"%@", [self
subviews]) turned up no subviews. I have a disconnect between what
thawing view objects from a nib and programmatically creating those
objects does. Is the correct course of action to programmatically
instantiate and add subviews? Is there a way to avoid updating code
every time I change the layout in IB? Or is this a case where I'm
better off drawing strings in my view's drawRect:?
[self drawRect:pRect];
Do not do this. It will not work. -drawRect: does not magically draw
all subviews too. Of course you have no subviews so it won't work even
then, but this second piece is going to prevent correct behavior even
after you correct the first piece. Use -dataWithPDFInRect: instead.
You mentioned using this in your first e-mail, and it's the right
thing to do. It *will* capture all subviews as well. It wasn't working
for you, presumably, because you had no subviews to capture.
Iin the code I provided, I do need to call that drawRect: to get at
least the custom view to draw.
I need to save the images as JPEG, so dataWithPDFInRect doesn't work
for me.
Thanks,
John
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