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Upon rolling over or clicking on an NSView, how can I update the view so that I can change the colour and other properties of view? It's the redrawing of the view which is the key to what I need to do, I already have a subclass created.

Josh Kahane
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  • How are you keeping references to your views? Are you by any chance using a collection view? –  Jul 06 '11 at 00:39

1 Answers1

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Listen for mouse events and do appropriate actions inside them. 

-(void)mouseEntered:(NSEvent *)theEvent {
    //draw rollover
}

-(void)mouseExited:(NSEvent *)theEvent {
    //draw normal
}

-(void)mouseDown:(NSEvent *)theEvent {
    //draw selected
}

-(void)mouseUp:(NSEvent *)theEvent {
    //draw normal
}
sudo rm -rf
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  • @alexgray: What doesn't work? The methods aren't called? You need to make sure your window subclass conforms to the `NSWindowDelegate`. – sudo rm -rf Mar 27 '12 at 02:23
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    -mouseDown and -mouseUp should work like expected. However, -mouseEntered and -mouseExited need trackingAreas to work. See http://stackoverflow.com/a/11190700/388412 – auco Apr 20 '13 at 14:46