utils.cs

来自「封装了一部分的蓝牙控制模块」· CS 代码 · 共 44 行

using System;
using System.Collections.Generic;
using System.Text;

namespace Microsoft.WindowsMobile.Bluetooth
{
    public class Utils
    {
        public Utils()
        {
        }

        public static IntPtr LocalAlloc(int byteCount)
        {
            IntPtr ptr = Win32.LocalAlloc(Win32.LMEM_ZEROINIT, byteCount);
            if (ptr == IntPtr.Zero)
            {
                throw new OutOfMemoryException();
            }

            return ptr;
        }

        public static void LocalFree(IntPtr hMem)
        {
            IntPtr ptr = Win32.LocalFree(hMem);
            if (ptr != IntPtr.Zero)
            {
                throw new ArgumentException();
            }
        }
    }

    public class Win32
    {
        public const int LMEM_ZEROINIT = 0x40;
        [System.Runtime.InteropServices.DllImport("coredll.dll", EntryPoint = "#33", SetLastError = true)]
        public static extern IntPtr LocalAlloc(int flags, int byteCount);

        [System.Runtime.InteropServices.DllImport("coredll.dll", EntryPoint = "#36", SetLastError = true)]
        public static extern IntPtr LocalFree(IntPtr hMem);
    }
}