gistfile1.txt

using System;
using System.Drawing;
using System.IO;
using MonoMac.Foundation;
using MonoMac.AppKit;
using MonoMac.ObjCRuntime;

namespace RFTTest
{
	public static class RFTMonkeyPatch
	{
		static IntPtr appKit = Dlfcn.dlopen (@"/System/Library/Frameworks/AppKit.framework/AppKit", 0);

		// NSStringAttributeKey.NSRtfTextDocumentType in XM 1.12
		static NSString NSRTFTextDocumentType = Dlfcn.GetStringConstant (appKit, "NSRTFTextDocumentType");

		static NSString NSDocumentTypeDocumentAttribute = Dlfcn.GetStringConstant (appKit, "NSDocumentTypeDocumentAttribute");

		public static NSDictionary RFTConversionDictionary
		{
			get 
			{
				return NSDictionary.FromObjectAndKey (NSDocumentTypeDocumentAttribute, NSRTFTextDocumentType);
			}
		}
	}

	public partial class AppDelegate : NSApplicationDelegate
	{
		MainWindowController mainWindowController;

		public AppDelegate ()
		{
		}



		public override void DidFinishLaunching (NSNotification notification)
		{
			mainWindowController = new MainWindowController ();
			mainWindowController.Window.MakeKeyAndOrderFront (this);

			var bytes = File.ReadAllBytes (@"/Users/donblas/Programming/Local/RFTTest/RFTTest/sample.rtf");
			NSData data = NSData.FromArray (bytes);

			NSDictionary d;
			NSError e;
			NSAttributedString s = new NSAttributedString (data, RFTMonkeyPatch.RFTConversionDictionary, out d, out e);
			NSTextField b = new NSTextField (mainWindowController.Window.ContentView.Frame);
			b.AttributedStringValue = s;
			mainWindowController.Window.ContentView.AddSubview (b);
		}
	}
}