vc++读取文件属性的详细信息描述 读取QQ的注册表路径

//////////////////////////////////////////////////////////////
//
// File: getfileversion.cpp
// Description: 获取EXE文件的属性详细信息
// Created: 2012-10-18
// Author: lhsbqb
//
//////////////////////////////////////////////////////////////

/*
The following code shows how to get FILEINFO value from resource file.

These WIN32 functions will be used:

* GetFileVersionInfo
* GetFileVersionInfoSize
* VerQueryValue
* GetModuleFileName
*/

#include "stdafx.h"
#include <windows.h>
#include <tchar.h>
#include <string>
#include <iostream>
#include "stdio.h"


#pragma comment(lib, "version.lib")
using namespace std;

std::string GetFileVersion(char * strFilePath) 
{
    DWORD dwSize; 
    DWORD dwRtn; 
    std::string szVersion;  
    //获取版本信息大小
    dwSize = GetFileVersionInfoSize(strFilePath,NULL); 
    if (dwSize == 0) 
    { 
       return ""; 
    }
    char *pBuf; 
    pBuf= new char[dwSize + 1]; 
    if(pBuf == NULL)
       return "";
    memset(pBuf, 0, dwSize + 1);
    //获取版本信息
    dwRtn = GetFileVersionInfo(strFilePath,NULL, dwSize, pBuf); 
    if(dwRtn == 0) 
    { 
       return ""; 
    }
    LPVOID lpBuffer = NULL;
    UINT uLen = 0;
    //版本资源中获取信息
    
dwRtn = VerQueryValue(pBuf, 
   TEXT("\\StringFileInfo\\080404b0\\FileDescription"), //0804中文
   //04b0即1252,ANSI
   //可以从ResourceView中的Version中BlockHeader中看到
   //可以测试的属性
   /*
   CompanyName 
   FileDescription 
   FileVersion 
   InternalName 
   LegalCopyright
   OriginalFilename
   ProductName 
   ProductVersion 
   Comments
   LegalTrademarks 
   PrivateBuild 
   SpecialBuild 
   */         
   &lpBuffer, 
   &uLen); 
if(dwRtn == 0) 
{ 
   return ""; 
}
szVersion = (char*)lpBuffer;
delete pBuf; 
return szVersion; 
}


void main()
{
#define MY_BUFSIZE 500
    HKEY hKey;
    TCHAR szProductType[MY_BUFSIZE];
    DWORD dwBufLen = MY_BUFSIZE;
    LONG lRet;

    if(RegOpenKeyEx(HKEY_LOCAL_MACHINE,
        TEXT("SOFTWARE\\Tencent\\PlatForm_Type_List\\3"),
        0,
        KEY_QUERY_VALUE,
        &hKey) == ERROR_SUCCESS)
    {
        lRet = RegQueryValueEx(hKey,
            TEXT("TypePath"),
            NULL,
            NULL,
            (LPBYTE)szProductType,
            &dwBufLen);

        //return szProductType;
    
    }

    RegCloseKey(hKey);

    //char * strFilePath  = "C:\\Program Files\\Tencent\\QQ\\Bin\\QQ.exe";
    char * strFilePath = szProductType;
    cout << strFilePath << " FileDescription is: " << GetFileVersion(strFilePath) << endl;
    getchar();
}

参考了msdn如下代码:

#define RTN_UNKNOWN 0
#define RTN_SERVER 1
#define RTN_WORKSTATION 2
#define RTN_NTAS 3
#define RTN_ERROR 13

DWORD GetWindowsVariant(void)
{
    #define MY_BUFSIZE 32    // Arbitrary initial value. 
                             // Dynamic allocation will be used.
    HKEY hKey;
    TCHAR szProductType[MY_BUFSIZE];
    DWORD dwBufLen = MY_BUFSIZE;
    LONG lRet;

    if(RegOpenKeyEx(HKEY_LOCAL_MACHINE,
        TEXT("SYSTEM\\CurrentControlSet\\Control\\ProductOptions"),
                    0,
                    KEY_QUERY_VALUE,
                    &hKey) != ERROR_SUCCESS) return RTN_ERROR;

    lRet = RegQueryValueEx(hKey,
                    TEXT("ProductType"),
                    NULL,
                    NULL,
                    (LPBYTE)szProductType,
                    &dwBufLen);

    RegCloseKey(hKey);

    if(lRet != ERROR_SUCCESS) return RTN_ERROR;

    // check product options, in order of likelihood
    if(lstrcmpi(TEXT("WINNT"), szProductType) == 0) 
         return RTN_WORKSTATION;
    if(lstrcmpi(TEXT("SERVERNT"), szProductType) == 0) 
         return RTN_SERVER;
    if(lstrcmpi(TEXT("LANMANNT"), szProductType) == 0) 
         return RTN_NTAS;
    // else return "unknown variant" code
    else return RTN_UNKNOWN;
} 

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