NodObjC Example of drawRect call (not working)

TestApp.js

// dependencies
var ObjC = require('NodObjC');

// ObjC dependencies
ObjC.import('Foundation');
ObjC.import('Cocoa');
ObjC.import('AppKit');
ObjC.import('QuartzCore');

// using ARC
var pool = ObjC.NSAutoreleasePool('new');

// application
var app  = ObjC.NSApplication('sharedApplication');

// show dock icon - to hide use: ObjC.NSApplicationActivationPolicyProhibited
app('setActivationPolicy', ObjC.NSApplicationActivationPolicyRegular);

// app name string
var appName = ObjC('TestApp');

var menuBar = ObjC.NSMenu('new')('autorelease');
var appMenuItem = ObjC.NSMenuItem('new')('autorelease');
menuBar('addItem', appMenuItem);
app('setMainMenu', menuBar);

var appMenu = ObjC.NSMenu('new')('autorelease');
var quitTitle = ObjC('Quit ')('stringByAppendingString', appName);
var quitMenuItem = ObjC.NSMenuItem('alloc')('initWithTitle', quitTitle, 'action', 'terminate:', 'keyEquivalent', ObjC('q'))('autorelease');
appMenu('addItem', quitMenuItem);
appMenuItem('setSubmenu', appMenu);

var styleMask = ObjC.NSTitledWindowMask | ObjC.NSClosableWindowMask; // | ObjC.NSResizableWindowMask;
var window = ObjC.NSWindow('alloc')('initWithContentRect', ObjC.NSMakeRect(0,0,400,400), 'styleMask', styleMask, 'backing', ObjC.NSBackingStoreBuffered, 'defer', false)('autorelease');
window('cascadeTopLeftFromPoint', ObjC.NSMakePoint(20,20));
window('setTitle', appName);

// set up the app delegate
var AppDelegate = ObjC.NSObject.extend('AppDelegate');
AppDelegate.addMethod('applicationDidFinishLaunching:', 'v@:@', function (self, _cmd, notif) {
	console.log('got applicationDidFinishLauching');
	console.log(notif);
});
AppDelegate.register();

var appDelegate = AppDelegate('alloc')('init');
app('setDelegate', appDelegate);

var RedRectView = ObjC.NSView.extend('RedRectView');
RedRectView.addMethod('drawRect:', 'v@:@', function (self, _cmd, rect) {
//	console.log(self);
//	ObjC.NSColor('redColor')('set');
//	ObjC.NSRectFill(ObjC.NSRectMake(0,0,100,100));

//	[super drawRect:rect];
//	RedRectView.getSuperclass()('drawRect', self);
});
RedRectView.register();

var redRectView = RedRectView('alloc')('initWithFrame', ObjC.NSMakeRect(0,0,100,100));
window('contentView')('addSubview', redRectView);
window('makeKeyAndOrderFront', window);

app('activateIgnoringOtherApps', true);
app('run');

pool('release');

Try this (note you'll need to use the main master branch off of github.com, as the new version isn't in NPM yet):

// dependencies
var ObjC = require('../');

// ObjC dependencies
ObjC.import('Foundation');
ObjC.import('Cocoa');
ObjC.import('AppKit');
ObjC.import('QuartzCore');

// using ARC
var pool = ObjC.NSAutoreleasePool('new');

// application
var app  = ObjC.NSApplication('sharedApplication');

// show dock icon - to hide use: ObjC.NSApplicationActivationPolicyProhibited
app('setActivationPolicy', ObjC.NSApplicationActivationPolicyRegular);

// app name string
var appName = ObjC('TestApp');

var menuBar = ObjC.NSMenu('new')('autorelease');
var appMenuItem = ObjC.NSMenuItem('new')('autorelease');
menuBar('addItem', appMenuItem);
app('setMainMenu', menuBar);

var appMenu = ObjC.NSMenu('new')('autorelease');
var quitTitle = ObjC('Quit ')('stringByAppendingString', appName);
var quitMenuItem = ObjC.NSMenuItem('alloc')('initWithTitle', quitTitle, 'action', 'terminate:', 'keyEquivalent', ObjC('q'))('autorelease');
appMenu('addItem', quitMenuItem);
appMenuItem('setSubmenu', appMenu);

var styleMask = ObjC.NSTitledWindowMask | ObjC.NSClosableWindowMask; // | ObjC.NSResizableWindowMask;
var window = ObjC.NSWindow('alloc')('initWithContentRect', ObjC.NSMakeRect(0,0,400,400), 'styleMask', styleMask, 'backing', ObjC.NSBackingStoreBuffered, 'defer', false)('autorelease');
window('cascadeTopLeftFromPoint', ObjC.NSMakePoint(20,20));
window('setTitle', appName);

// set up the app delegate
var AppDelegate = ObjC.NSObject.extend('AppDelegate');
AppDelegate.addInstanceMethod('applicationDidFinishLaunching:', 'v@:@', function (self, _cmd, notif) {
    console.log('got applicationDidFinishLauching');
    console.log(notif);
});
AppDelegate.register();

var appDelegate = AppDelegate('alloc')('init');
app('setDelegate', appDelegate);

var RedRectView = ObjC.NSView.extend('RedRectView');
RedRectView.addInstanceMethod('drawRect:', 'v@:@', function (self, _cmd, rect) {
    //console.log(self);
    ObjC.NSColor('redColor')('set');
    ObjC.NSRectFill(ObjC.NSMakeRect(0,0,100,100));

    //self.super('drawRect',rect);
    //RedRectView.getSuperclass()('drawRect', self);
});
RedRectView.register();

var redRectView = RedRectView('alloc')('initWithFrame', ObjC.NSMakeRect(0,0,100,100));
window('contentView')('addSubview', redRectView);
window('makeKeyAndOrderFront', window);

app('activateIgnoringOtherApps', true);
app('run');

pool('release');