Re: drawRect: called twice for NSView subclass.
Re: drawRect: called twice for NSView subclass.
- Subject: Re: drawRect: called twice for NSView subclass.
- From: William Hunt <email@hidden>
- Date: Sun, 20 Apr 2008 13:49:01 -0700
On Apr 19, 2008, at 6:28 PM, Scott Thompson wrote:
On Apr 19, 2008, at 7:15 PM, William Hunt wrote:
Essentially I have a window with a custom view atop a button. What
happens at each refresh, however, is that the custom view's
drawRect: is called twice. First it is called with the whole
window's NSRect, then it is called with the "proper" NSRect. The
result is that if I draw a circle at (0,0), it gets drawn twice at
different locations:
+------------------+
|+----------------+|
|| Custom ||
||o View ||
|+----------------+|
|o == |
+------------------+
What is going on here? Is this buggy behavior or correct
behavior? My code is basically a new Cocoa application with a
single NSView subclass. There is absolutely nothing funny (that I
know of) going on here. That leads me to believe that the behavior
is "correct," and that I'm just missing something.
For the record, I only want the one call to drawRect:, the one with
the "proper" NSRect.
It sounds like you've somehow ended up with the content rect of the
window as an instance of your custom view class.
How do you create your view hierarchy (i.e. in Interface Builder) or
"by hand"?
Scott
Indeed, somehow the class for the content window got changed. Of
course, that somehow was me making the change. Grr.
Thanks again,
Wil
--
Wil Hunt
"Life is the art of drawing sufficient conclusions from insufficient
premises."
-- Samuel Butler
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