first-responder

I followed some examples for making an NSButton subclass work as an NSColorWell (since our NSButton subclass already gives us the appearance behavior we need), however I've noticed that after using the button to invoke the panel and changing the color, it's also changing the color of selected text in our document. If I instead subclassed NSColorWell with our appearance customizations, would it not have this problem? However, I'm still hoping for a work-around that avoids that & still lets us use our button subclass. I've seen discussion threads suggest letting the button itself become the

I am developing a Mac app using storyboards. I have a window that presents an NSViewController as its contents, which contains a "container view controller" that embeds an NSSplitViewController . The expected behaviour is for the NSSplitViewController to be part of the responder chain, such that a menu item that triggers the toggleSidebar action on the first responder actually collapses the item of the NSSplitViewController that's marked as a sidebar. However, this simply does not happen and the menu item remains disabled. So my question is, how can-I get the NSSplitViewController to be part

I am confused about the iPhone responder chain. Specifically, in the iPhone event handling guide http://developer.apple.com/iPhone/library/documentation/iPhone/Conceptual/iPhoneOSProgrammingGuide/EventHandling/EventHandling.html , we have the following: The first responder is the responder object in an application (usually a UIView object) that is designated to be the first recipient of events other than touch events. But UIView is a subclass of UIResponder. And the UIResponder class reference says this: - (BOOL)canBecomeFirstResponder Return Value YES if the receiver can become the first