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我有一个简单的实用程序，它使用一些不安全的代码来获取文件版本信息。当我将其编译为混合平台（vs2008/.net 3.5）并部署到 64 位机器时，我得到一个堆损坏错误。如果我重新编译为 x86，那么一切正常......

由于我对 .NET 通用类型系统的理解，这令人惊讶。我的不安全代码使用指向短的指针和指向字节的指针。由于 CTS，这些常见类型在任何平台上的大小都相同吗？我在这里想念什么

using System;
using System.Reflection;
using System.Runtime.InteropServices;


public class Win32Imports
{
    [DllImport("version.dll")]
    public static extern bool GetFileVersionInfo(string sFileName,
          int handle, int size, byte[] infoBuffer);

    [DllImport("version.dll")]
    public static extern int GetFileVersionInfoSize(string sFileName,
          out int handle);

    // The third parameter - "out string pValue" - is automatically
    // marshaled from ANSI to Unicode:
    [DllImport("version.dll")]
    unsafe public static extern bool VerQueryValue(byte[] pBlock,
          string pSubBlock, out string pValue, out uint len);

    // This VerQueryValue overload is marked with 'unsafe' because 
    // it uses a short*:
    [DllImport("version.dll")]
    unsafe public static extern bool VerQueryValue(byte[] pBlock,
          string pSubBlock, out short* pValue, out uint len);
}

public class FileInformation
{
    // Main is marked with 'unsafe' because it uses pointers:
    unsafe public static string GetVersionInformation(string path)
    {

        // Figure out how much version info there is:
        int handle = 0;
        int size =
              Win32Imports.GetFileVersionInfoSize(path,
              out handle);
        if (size == 0) return "";

        byte[] buffer = new byte[size];
        if (!Win32Imports.GetFileVersionInfo(path, handle, size, buffer)) return "";

        // Get the locale info from the version info:
        short* subBlock = null;
        uint len = 0;           
        if (!Win32Imports.VerQueryValue(buffer, @"\VarFileInfo\Translation", out subBlock, out len)) return "";


        // Get the ProductVersion value for this program:
        string spv = @"\StringFileInfo\" + subBlock[0].ToString("X4") + subBlock[1].ToString("X4") + @"\ProductVersion";
        byte* pVersion = null;
        string versionInfo;
        if (!Win32Imports.VerQueryValue(buffer, spv, out versionInfo, out len)) return "";
        return versionInfo;

    }
}

感谢所有僵尸的杀手，等待僵尸启示录...... -乔纳森

4

2 回答 2

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Is there any reason you couldn't use the FileVersionInfo managed class for this? I suspect it works properly on both 32 bit and 64 bit platforms.

于 2010-08-11T14:51:39.993 回答
1

也许由于平台中的指针是 64 位的，但是您使用的是不安全的，所以没有正确转换？还请显示您的 p/invoke 导入的样子。

于 2010-08-11T14:55:37.160 回答