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saveGraphicsState vs. lockFocus

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saveGraphicsState vs. lockFocus

Subject: saveGraphicsState vs. lockFocus
From: "Eric Lin" <email@hidden>
Date: Tue, 2 May 2006 13:07:55 -0700

I'm a bit confused as to what's the difference between calling
saveGraphicsState (NSGraphicsContext) and lockFocus (NSView).  They
appear to be doing something quite similar.  Does lockFocus simply
invoke saveGraphicsState?

And when should saveGraphicsState and lockFocus be called?  (whenever
I use functions like NSRectFill() and matrix transformation matrix?)

Thanks
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Re: saveGraphicsState vs. lockFocus
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