[Rubycocoa-talk] @selector thingamabob.

[Dave H. <gr...@gr...>]

I'm creating a handy way of doing alert sheets for a program, so that  
they'd work something like this:

class Main < OSX::NSObject

    ib_outlet :window,

	def applicationDidFinishLaunching(something)
		myAlert = AlertMessage.alloc.init.display(@window, 'Quit already?',  
"This program just launched! Do you want to quit  
already?","OK","Cancel")
		if myAlert then @window.close
	end
end

Assume that the window's connected to "window" in InterfaceBuilder, et  
cetera.

Unfortunately, there's one critical piece missing, and I'm mystified on  
how to get this part to work. The following code will run....

require 'osx/cocoa'

class AlertMessage < OSX::NSObject

	include OSX

	def display(theWindow, messageTitle, messageText, defaultOption,  
altOption)
		p "Alert: " + messageTitle
		theAlert = NSAlert.alloc.init
		theAlert.addButtonWithTitle(defaultOption)
		theAlert.addButtonWithTitle(altOption) if altOption
		theAlert.setMessageText(messageTitle)
		theAlert.setInformativeText(messageText)
		someAnswer =  
theAlert.beginSheetModalForWindow_modalDelegate_didEndSelector_contextIn 
fo(theWindow, self, 'alertDidEnd_returnCode_contextInfo', nil)
		p "Answer"
		p someAnswer
		return @theResponse
	end

	def alertDidEnd_returnCode_contextInfo(theAlert)
		return
	end
	
end



Unfortunately, I can't do anything but one-button messages, because I  
can't get the return code back from the NSAlert. The call to  
'beginSheetModalForWindow...' looks like this in Objective-C:

beginSheetModalForWindow:[someWindow window]
	modalDelegate:self
	didEndSelector:@selector(alertDidEnd:returnCode:contextInfo:)
	contextInfo:nil

How exactly can I get a parameterized selector into this thing? In  
other words,  how do I do
	@selector(alertDidEnd:returnCode:contextInfo:)
in RubyCocoa?