public sealed class CustomBuffer : IDisposable
{
	private IntPtr _buf = IntPtr.Zero;

	private const int HEAP_ZERO_MEMORY = 0x00000008;

	[DllImport("kernel32.dll", SetLastError=true)]
	private static extern IntPtr GetProcessHeap();

	[DllImport("kernel32.dll", SetLastError=false)]
	private static extern IntPtr HeapAlloc(IntPtr hHeap, uint dwFlags, UIntPtr dwBytes);

	[DllImport("kernel32.dll", SetLastError=true)]
	static extern bool HeapFree(IntPtr hHeap, uint dwFlags, IntPtr lpMem);

	public CustomBuffer(int size)
	{
		if (size > 0 && size < 0x7FFF8)
		{
			_buf = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, new UIntPtr((uint)size));
		}
	}

	~CustomBuffer()
	{
		Dispose(false);
	}

	public void Dispose()
	{
		Dispose(true);
	}

	private void Dispose(bool disposing)
	{
		if (_buf != IntPtr.Zero)
		{
			HeapFree(GetProcessHeap(), 0, _buf);
			_buf = IntPtr.Zero;
		}

		if (disposing)
		{
			GC.SuppressFinalize(this);
		}
	}
}