GtkSharp/Source/Libs/GLibSharp/GException.cs

// GException.cs : GError handling
//
// Authors: Rachel Hestilow  <hestilow@ximian.com>
//
// Copyright (c) 2002 Rachel Hestilow 
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of version 2 of the Lesser GNU General 
// Public License as published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this program; if not, write to the
// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.


namespace GLib {

	using System;
	using System.Runtime.InteropServices;
	
	public class GException : Exception
	{
		string msg;

		public GException (IntPtr errptr)
		{
			var err = (GError)Marshal.PtrToStructure(errptr, typeof(GError));
			Domain = err.Domain;
			Code = err.Code;
			msg = Marshaller.Utf8PtrToString(err.Msg);
			g_clear_error(ref errptr);
		}

		struct GError {
			public int Domain;
			public int Code;
			public IntPtr Msg;
		}

		public int Code { get; private set; }

		public int Domain { get; private set; }

		public override string Message => msg;

		[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
		delegate void d_g_clear_error(ref IntPtr errptr);
		static d_g_clear_error g_clear_error = FuncLoader.LoadFunction<d_g_clear_error>(FuncLoader.GetProcAddress(GLibrary.Load(Library.GLib), "g_clear_error"));
	}
}