C++

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get file description via its window

mrbplusplus (8)
here's my code
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string GetforegroundWindowdescription()
{
	HWND winhandle;
	LPSTR fileloc;
	HANDLE filohandle;
	DWORD sizE;
	DWORD reserved;
	LPVOID dAta;
	LPVOID subdAta;
	UINT dwLength;
	unsigned long int winid;
	winhandle = GetForegroundWindow();
	GetWindowThreadProcessId(winhandle, &winid);
	filohandle = OpenProcess(PROCESS_ALL_ACCESS, FALSE, winid);
	GetFinalPathNameByHandleA(filohandle, fileloc, NULL, NULL);
	sizE = GetFileVersionInfoSizeA(fileloc, &reserved);
	GetFileVersionInfoA(makanfile, NULL, sizE, dAta);
	VerQueryValue(dAta,TEXT("\\StringFileInfo\\040904E4\\FileDescription"), &subdAta, &dwLength);
	CloseHandle(filohandle);
	
}

Visual Studio 2015
I wanted to create a function to get the description field in task manager for the foreground window and return it as a string,but I just started learning VC++ and the problem is,that there are no sample codes for what I want to do.
so can you debug this please?
I was messing with the codes for 12 hours XD
modoran (2077)
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#include "stdafx.h"
#include <tchar.h>

#pragma comment (lib, "version.lib")	


CFileVersionInfo::CFileVersionInfo()
{
	Reset();
}


CFileVersionInfo::~CFileVersionInfo()
{}

BOOL CFileVersionInfo::GetTranslationId(LPVOID lpData, UINT unBlockSize, WORD wLangId, DWORD &dwId, BOOL bPrimaryEnough/*= FALSE*/)
{
	LPWORD lpwData;
	for (lpwData = (LPWORD)lpData; (LPBYTE)lpwData < ((LPBYTE)lpData) + unBlockSize; lpwData += 2)
	{
		if (*lpwData == wLangId)
		{
			dwId = *((DWORD*)lpwData);
			return TRUE;
		}
	}

	if (!bPrimaryEnough)
		return FALSE;

	for (lpwData = (LPWORD)lpData; (LPBYTE)lpwData < ((LPBYTE)lpData) + unBlockSize; lpwData += 2)
	{
		if (((*lpwData) & 0x00FF) == (wLangId & 0x00FF))
		{
			dwId = *((DWORD*)lpwData);
			return TRUE;
		}
	}

	return FALSE;
}

WORD CFileVersionInfo::GetFileVersion(int nIndex) const
{
	if (nIndex == 0)
		return (WORD)(m_FileInfo.dwFileVersionLS & 0x0000FFFF);
	else if (nIndex == 1)
		return (WORD)((m_FileInfo.dwFileVersionLS & 0xFFFF0000) >> 16);
	else if (nIndex == 2)
		return (WORD)(m_FileInfo.dwFileVersionMS & 0x0000FFFF);
	else if (nIndex == 3)
		return (WORD)((m_FileInfo.dwFileVersionMS & 0xFFFF0000) >> 16);
	else
		return 0;
}


WORD CFileVersionInfo::GetProductVersion(int nIndex) const
{
	if (nIndex == 0)
		return (WORD)(m_FileInfo.dwProductVersionLS & 0x0000FFFF);
	else if (nIndex == 1)
		return (WORD)((m_FileInfo.dwProductVersionLS & 0xFFFF0000) >> 16);
	else if (nIndex == 2)
		return (WORD)(m_FileInfo.dwProductVersionMS & 0x0000FFFF);
	else if (nIndex == 3)
		return (WORD)((m_FileInfo.dwProductVersionMS & 0xFFFF0000) >> 16);
	else
		return 0;
}


DWORD CFileVersionInfo::GetFileFlagsMask() const
{
	return m_FileInfo.dwFileFlagsMask;
}


DWORD CFileVersionInfo::GetFileFlags() const
{
	return m_FileInfo.dwFileFlags;
}


DWORD CFileVersionInfo::GetFileOs() const
{
	return m_FileInfo.dwFileOS;
}


DWORD CFileVersionInfo::GetFileType() const
{
	return m_FileInfo.dwFileType;
}


DWORD CFileVersionInfo::GetFileSubtype() const
{
	return m_FileInfo.dwFileSubtype;
}

stlString CFileVersionInfo::GetCompanyName() const
{
	return m_strCompanyName;
}


stlString CFileVersionInfo::GetFileDescription() const
{
	return m_strFileDescription;
}


stlString CFileVersionInfo::GetFileVersion() const
{
	return m_strFileVersion;
}


stlString CFileVersionInfo::GetInternalName() const
{
	return m_strInternalName;
}


stlString CFileVersionInfo::GetLegalCopyright() const
{
	return m_strLegalCopyright;
}


stlString CFileVersionInfo::GetOriginalFileName() const
{
	return m_strOriginalFileName;
}


stlString CFileVersionInfo::GetProductName() const
{
	return m_strProductName;
}


stlString CFileVersionInfo::GetProductVersion() const
{
	return m_strProductVersion;
}


stlString CFileVersionInfo::GetComments() const
{
	return m_strComments;
}


stlString CFileVersionInfo::GetLegalTrademarks() const
{
	return m_strLegalTrademarks;
}


stlString CFileVersionInfo::GetPrivateBuild() const
{
	return m_strPrivateBuild;
}


stlString CFileVersionInfo::GetSpecialBuild() const
{
	return m_strSpecialBuild;
}


void CFileVersionInfo::Reset()
{
	ZeroMemory(&m_FileInfo, sizeof(m_FileInfo));
	m_strCompanyName.clear();
	m_strFileDescription.clear();
	m_strFileVersion.clear();
	m_strInternalName.clear();
	m_strLegalCopyright.clear();
	m_strOriginalFileName.clear();
	m_strProductName.clear();
	m_strProductVersion.clear();
	m_strComments.clear();
	m_strLegalTrademarks.clear();
	m_strPrivateBuild.clear();
	m_strSpecialBuild.clear();
}

BOOL CFileVersionInfo::Create(LPCTSTR lpszFileName)
{
	Reset();

	DWORD	dwHandle;
	DWORD	dwFileVersionInfoSize = GetFileVersionInfoSize((LPTSTR)lpszFileName, &dwHandle);
	if (!dwFileVersionInfoSize)
		return FALSE;

	LPVOID	lpData = (LPVOID)new BYTE[dwFileVersionInfoSize];
	if (!lpData)
		return FALSE;

	try
	{
		if (!GetFileVersionInfo((LPTSTR)lpszFileName, dwHandle, dwFileVersionInfoSize, lpData))
			throw FALSE;

		// catch default information
		LPVOID	lpInfo;
		UINT		unInfoLen;
		if (VerQueryValue(lpData, _T("\\"), &lpInfo, &unInfoLen))
		{
			//ASSERT(unInfoLen == sizeof(m_FileInfo));
			if (unInfoLen == sizeof(m_FileInfo))
				memcpy(&m_FileInfo, lpInfo, unInfoLen);
		}

		// find best matching language and codepage
		VerQueryValue(lpData, _T("\\VarFileInfo\\Translation"), &lpInfo, &unInfoLen);

		DWORD	dwLangCode = 0;
		if (!GetTranslationId(lpInfo, unInfoLen, GetUserDefaultLangID(), dwLangCode, FALSE))
		{
			if (!GetTranslationId(lpInfo, unInfoLen, GetUserDefaultLangID(), dwLangCode, TRUE))
			{
				if (!GetTranslationId(lpInfo, unInfoLen, MAKELANGID(LANG_NEUTRAL, SUBLANG_NEUTRAL), dwLangCode, TRUE))
				{
					if (!GetTranslationId(lpInfo, unInfoLen, MAKELANGID(LANG_ENGLISH, SUBLANG_NEUTRAL), dwLangCode, TRUE))
						// use the first one we can get
						dwLangCode = *((DWORD*)lpInfo);
				}
			}
		}


		stlString	strSubBlock;
		TCHAR buf[1024];
		_stprintf(buf, _T("\\StringFileInfo\\%04X%04X\\"), dwLangCode & 0x0000FFFF, (dwLangCode & 0xFFFF0000) >> 16);
		strSubBlock = buf;


		// catch string table
		stlString sBuf;

		sBuf = strSubBlock;
		sBuf += _T("CompanyName");
		if (VerQueryValue(lpData, sBuf.c_str (), &lpInfo, &unInfoLen))
			m_strCompanyName = stlString((LPCTSTR)lpInfo);

		sBuf.clear();
		sBuf = strSubBlock;
		sBuf += _T("FileDescription");
		if (VerQueryValue(lpData, sBuf.c_str(), &lpInfo, &unInfoLen))
			m_strFileDescription = stlString((LPCTSTR)lpInfo);


		sBuf.clear();
		sBuf = strSubBlock;
		sBuf += _T("FileVersion");
		if (VerQueryValue(lpData, sBuf.c_str(), &lpInfo, &unInfoLen))
			m_strFileVersion = stlString((LPCTSTR)lpInfo);


		sBuf.clear();
		sBuf = strSubBlock;
		sBuf += _T("InternalName");
		if (VerQueryValue(lpData, sBuf.c_str(), &lpInfo, &unInfoLen))
			m_strInternalName = stlString((LPCTSTR)lpInfo);


		sBuf.clear();
		sBuf = strSubBlock;
		sBuf += _T("LegalCopyright");
		if (VerQueryValue(lpData, sBuf.c_str(), &lpInfo, &unInfoLen))
			m_strLegalCopyright = stlString((LPCTSTR)lpInfo);


		sBuf.clear();
		sBuf = strSubBlock;
		sBuf += _T("OriginalFileName");
		if (VerQueryValue(lpData, sBuf.c_str(), &lpInfo, &unInfoLen))
			m_strOriginalFileName = stlString((LPCTSTR)lpInfo);


		sBuf.clear();
		sBuf = strSubBlock;
		sBuf += _T("ProductName");
		if (VerQueryValue(lpData, sBuf.c_str(), &lpInfo, &unInfoLen))
			m_strProductName = stlString((LPCTSTR)lpInfo);


		sBuf.clear();
		sBuf = strSubBlock;
		sBuf += _T("ProductVersion");
		if (VerQueryValue(lpData, sBuf.c_str(), &lpInfo, &unInfoLen))
			m_strProductVersion = stlString((LPCTSTR)lpInfo);


		sBuf.clear();
		sBuf = strSubBlock;
		sBuf += _T("Comments");
		if (VerQueryValue(lpData, sBuf.c_str(), &lpInfo, &unInfoLen))
			m_strComments = stlString((LPCTSTR)lpInfo);


		sBuf.clear();
		sBuf = strSubBlock;
		sBuf += _T("LegalTrademarks");
		if (VerQueryValue(lpData, sBuf.c_str(), &lpInfo, &unInfoLen))
			m_strLegalTrademarks = stlString((LPCTSTR)lpInfo);


		sBuf.clear();
		sBuf = strSubBlock;
		sBuf += _T("PrivateBuild");
		if (VerQueryValue(lpData, sBuf.c_str(), &lpInfo, &unInfoLen))
			m_strPrivateBuild = stlString((LPCTSTR)lpInfo);


		sBuf.clear();
		sBuf = strSubBlock;
		sBuf += _T("SpecialBuild");
		if (VerQueryValue(lpData, sBuf.c_str(), &lpInfo, &unInfoLen))
			m_strSpecialBuild = stlString((LPCTSTR)lpInfo);

		delete[] lpData;
	}
	catch (BOOL)
	{
		delete[] lpData;
		return FALSE;
	}

	return TRUE;
}
modoran (2077)
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#pragma once
#define _CRT_SECURE_NO_WARNINGS 1
#include <windows.h>
#include <string>

#include <winver.h>
typedef std::basic_string <TCHAR> stlString;
class CFileVersionInfo
{
	
	// construction/destruction
public:
	CFileVersionInfo();
	virtual ~CFileVersionInfo();

	// operations
public:
	BOOL Create(HMODULE hModule = NULL);
	BOOL Create(LPCTSTR lpszFileName);

	// attribute operations
public:
	WORD GetFileVersion(int nIndex) const;
	WORD GetProductVersion(int nIndex) const;
	DWORD GetFileFlagsMask() const;
	DWORD GetFileFlags() const;
	DWORD GetFileOs() const;
	DWORD GetFileType() const;
	DWORD GetFileSubtype() const;

	stlString GetCompanyName() const;
	stlString GetFileDescription() const;
	stlString GetFileVersion() const;
	stlString GetInternalName() const;
	stlString GetLegalCopyright() const;
	stlString GetOriginalFileName() const;
	stlString GetProductName() const;
	stlString GetProductVersion() const;
	stlString GetComments() const;
	stlString GetLegalTrademarks() const;
	stlString GetPrivateBuild() const;
	stlString GetSpecialBuild() const;

	// implementation helpers
protected:
	virtual void Reset();
	BOOL GetTranslationId(LPVOID lpData, UINT unBlockSize, WORD wLangId, DWORD &dwId, BOOL bPrimaryEnough = FALSE);

	// attributes
private:
	VS_FIXEDFILEINFO m_FileInfo;

	stlString m_strCompanyName;
	stlString m_strFileDescription;
	stlString m_strFileVersion;
	stlString m_strInternalName;
	stlString m_strLegalCopyright;
	stlString m_strOriginalFileName;
	stlString m_strProductName;
	stlString m_strProductVersion;
	stlString m_strComments;
	stlString m_strLegalTrademarks;
	stlString m_strPrivateBuild;
	stlString m_strSpecialBuild;
};


Example usage:
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int CALLBACK WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
	HWND winhandle = GetForegroundWindow ();
	DWORD winid = 0;
	GetWindowThreadProcessId ( winhandle, &winid );

	HANDLE hProcess = OpenProcess( PROCESS_QUERY_INFORMATION, FALSE, winid );
	
	TCHAR szExe[MAX_PATH + 1];
	DWORD lpdwSize = MAX_PATH;

	BOOL bFile = QueryFullProcessImageName ( hProcess, 0, szExe, &lpdwSize );
	CloseHandle(hProcess);

	CFileVersionInfo data;
	data.Create(szExe);
	MessageBox(NULL, data.GetFileDescription ().c_str (), szExe, MB_OK);
	return 0;
}
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