使用VerQueryValue检索应用程序的文件描述

Retrieve File Description for an Application using VerQueryValue

本文关键字：文件 描述 应用程序 VerQueryValue 检索 使用      更新时间：2023-10-16

我真的对这个函数感到困惑。目前我已成功检索到FileVersion和ProductVersion。现在我想在应用程序中检索更多信息，如FileDescription和CompanyName。

DWORD dwLen;
VS_FIXEDFILEINFO    *pFileInfo;
UINT                pLenFileInfo;
dwLen = GetFileVersionInfoSize("D:/firefox.exe", NULL);
BYTE *sKey = new BYTE[dwLen];
GetFileVersionInfo("D:/firefox.exe", NULL, dwLen, sKey);
VerQueryValue(sKey, "\", (LPVOID*)&pFileInfo, &pLenFileInfo);
// at now i can retrieve file Version with structure VS_FIXEDFILEINFO
VerQueryValue(sKey, "\StringFileInfo\%04x%09x\FileDescription", (LPVOID*) &pFileInfo, &pLenFileInfo);
delete[] sKey;
cout << pFileInfo;
// it return address buffer `00230428`;

我怎样才能像返回Firefox一样返回FileDescription？使用什么结构来检索第三个LPVOID参数中的FileDescription？在我的代码中，我将pFileInfo传递到VerQueryValue()中两次。

编辑：

DWORD dwLen;

struct LANGANDCODEPAGE {
WORD wLanguage;
WORD wCodePage;
} *lpTranslate;

dwLen = GetFileVersionInfoSize("D:/firefox.exe", NULL);

BYTE *sKey = new BYTE[dwLen];
TCHAR *sCompanyName = new char[1024];

GetFileVersionInfo("D:/firefox.exe", NULL, dwLen, sKey);

VerQueryValue(sKey, "\VarFileInfo\Translation", (LPVOID*)&lpTranslate, &pLenFileInfo);
VerQueryValue(test, "\StringFileInfo\%04x%09x\FileDescription", (LPVOID*)&sCompanyName, &pLenFileInfo);
delete[] sKey;
cout << lpTranslate -> wLanguage;

VerQueryValue(test, "\StringFileInfo\%04x%09x\FileDescription",
(LPVOID*)&sCompanyName, &pLenFileInfo);

第二个参数的格式应为"\StringFileInfo\NxM\FileDescription"，其中N和M分别为wLanguage和wCodePage。按照注释部分的示例，可以使用"%04x%04x"作为打印格式说明符来创建字符串。示例：

BOOL foo()
{
const char* filename = "c:\windows\hh.exe";
int dwLen = GetFileVersionInfoSize(filename, NULL);
if(!dwLen)
return 0;
auto *sKey = new BYTE[dwLen];
std::unique_ptr<BYTE[]> skey_automatic_cleanup(sKey);
if(!GetFileVersionInfo(filename, NULL, dwLen, sKey))
return 0;
struct LANGANDCODEPAGE {
WORD wLanguage;
WORD wCodePage;
} *lpTranslate;
UINT cbTranslate = 0;
if(!VerQueryValue(sKey, "\VarFileInfo\Translation",
(LPVOID*)&lpTranslate, &cbTranslate))
return 0;
for(unsigned int i = 0; i < (cbTranslate / sizeof(LANGANDCODEPAGE)); i++)
{
char subblock[256];
//use sprintf if sprintf_s is not available
sprintf_s(subblock, "\StringFileInfo\%04x%04x\FileDescription",
lpTranslate[i].wLanguage, lpTranslate[i].wCodePage);
char *description = NULL;
UINT dwBytes;
if(VerQueryValue(sKey, subblock, (LPVOID*)&description, &dwBytes))
MessageBox(0, description, 0, 0);
}
return TRUE;
}
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