From: Ben Giddings <bg-rubytalk@...>
Date: 2005-12-09T07:59:17+09:00
Subject: Advanced rubycocoa: full-screen applications?  (Can I access CoreGraphics calls?)

Hi guys,

I'm really pushing the RubyCocoa boundaries for a demo I'm trying to  
build.

I want to display a QuartzComposer application full-screen (i.e. no  
menu bar, no dock, etc.) and then control it by Ruby.

So far, I can get a windowed QuartzComposer application working, but  
I don't know how to make it go full-screen.

I found instructions on how to make full-screen OSX applications, but  
I can't figure out how to call the required methods / use the right  
variables from within Ruby.

Here's the article on how to make a full-screen app from Cocoa:

http://www.cocoadevcentral.com/articles/000028.php

But when I do the bit that tries to call CGDisplayCapture:

     if (CGDisplayCapture( kCGDirectMainDisplay ) != kCGErrorSuccess) {
         NSLog( @"Couldn't capture the main display!" );
         // Note: you'll probably want to display a proper error  
dialog here
     }

I can't figure out how to call those methods or use the  
kCGDirectMainDisplay method from within Ruby.

I've loaded the ApplicationServices framework, which should give me  
access to the CoreGraphics calls, but... I don't know how to get to  
them.

Any ideas?

Ben