AirScout/HamLibSharp/Utils/IntPtrExtensions.cs

47 wiersze
1.4 KiB
C#

//
// IntPtrExtensions.cs
//
// Author:
// Jae Stutzman <jaebird@gmail.com>
//
// Copyright (c) 2016 Jae Stutzman
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// 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, see <http://www.gnu.org/licenses/>.
using System;
using System.Runtime.InteropServices;
namespace HamLibSharp
{
public static class IntPtrExtensions
{
public static IntPtr Increment (this IntPtr ptr, int cbSize)
{
return new IntPtr (ptr.ToInt64 () + cbSize);
}
public static IntPtr Increment<T> (this IntPtr ptr)
{
return ptr.Increment (Marshal.SizeOf (typeof(T)));
}
public static T ElementAt<T> (this IntPtr ptr, int index)
{
var offset = Marshal.SizeOf (typeof(T)) * index;
var offsetPtr = ptr.Increment (offset);
return (T)Marshal.PtrToStructure (offsetPtr, typeof(T));
}
}
}