On 24/07/2011, at 1:46 PM, Tom Jeffries wrote:

> When I put both the beginning graphics and the graphics that are to be drawn
> later in the initial drawRect call everything is drawn without a problem.
> However, drawRect does not get called when the user clicks the button on the
> second window. I've tried awakeFromNib, setNeedsDisplay, needsDisplay, and
> display, but nothing I've found so far gets the NSView window to call
> drawRect.
> 
> I am fairly new to OS X programming and appreciate any hints you can throw
> my way.


Show your code.

You don't call drawRect: - the framework does. You can tell the framework it 
needs to be called by calling the view's -setNeedsDisplay: method. Are you 
doing that?

How does the button come into it? How are you responding to the button? That's 
the trouble - what you've said so far is far too vague, it could be a thousand 
different things (but probably something simple).

--Graham


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