自学教程：C++ GetFileVersionInfoSize函数代码示例

// Returns the version, as two unsigned longs, of the passed in path.// If there is an error, or the version can't be determined, this will// return null.// It is the callers responsibility to free the return value if it is// non-null.DWORD *getVersion(const char *path) {    int        handle;    int        size;    if ((size = GetFileVersionInfoSize((char *)path, &handle)) > 0) {        void     *data;        data = malloc(size);        if (GetFileVersionInfo((char *)path, 0, size, data)) {            VS_FIXEDFILEINFO     info;            void                 *infoData;            int                  infoLength;            if (VerQueryValue(data, "//", &infoData, &infoLength)) {                VS_FIXEDFILEINFO   *defaultInfo = (VS_FIXEDFILEINFO *)infoData;                unsigned long      *retValue = (DWORD *)malloc(sizeof(DWORD)                                                               * 2);                retValue[0] = defaultInfo->dwFileVersionMS;                retValue[1] = defaultInfo->dwFileVersionLS;                return retValue;            }        }    }    return NULL;}

CString CGnucleusDoc::GetVersionInfo(void){	char szAppName[_MAX_PATH];	DWORD dwHandle, dwSize;	CString version = "9.9.9.9";	if( GetModuleFileName(AfxGetInstanceHandle(), szAppName, sizeof(szAppName)) )	{		dwHandle = 0;		dwSize = GetFileVersionInfoSize(szAppName, &dwHandle);		if( dwSize != 0L )		{			UINT uVerInfoSize;			LPVOID lpStr;			LPVOID lpVerInfo = new BYTE[dwSize];			if( GetFileVersionInfo(szAppName, NULL, dwSize, lpVerInfo) )			{				if( VerQueryValue(lpVerInfo, "//StringFileInfo//040904B0//ProductVersion", &lpStr, &uVerInfoSize) )					version = reinterpret_cast<char *>(lpStr);			}			delete[] lpVerInfo;		}	}	return version;}

void FileVersionInfo::_readVersion(){		DWORD dwLen, dwUnUsed;	LPTSTR lpVI = NULL;	assert(m_file.size() >0);		dwLen = GetFileVersionInfoSize(m_file.c_str(), &dwUnUsed);	if (dwLen > 0)	{		lpVI = (LPTSTR) GlobalAlloc(GPTR, dwLen);	}	if (lpVI != NULL)	{				VS_FIXEDFILEINFO *lpFfi;		wchar_t szBuffer[2048];		UINT uLen = 0;		GetFileVersionInfo(m_file.c_str(), NULL, dwLen, lpVI);		if (VerQueryValue(lpVI , L"//" , (LPVOID *)&lpFfi , &uLen))		{			swprintf_s(szBuffer, L"%d.%d.%d.%d", HIWORD(lpFfi->dwProductVersionMS), LOWORD(lpFfi->dwProductVersionMS), 				HIWORD(lpFfi->dwProductVersionLS), LOWORD(lpFfi->dwProductVersionLS));			m_version = szBuffer;			m_majorVersion =  HIWORD(lpFfi->dwProductVersionMS);		}		GlobalFree((HGLOBAL)lpVI);	}	g_log.Log(L"FileVersionInfo::ReadVersion. File '%s' version '%s'", (wchar_t*) m_file.c_str(), (wchar_t*) m_version.c_str());	}

int vmsBtSupport::getBtDllVersion(){	static int ver = -1;	if (ver != -1)		return ver;	CString str = getBtDllFileName ().c_str ();	if (GetFileAttributes (str) == DWORD (-1))		return ver = INT_MAX;		DWORD dw;	DWORD dwSize = GetFileVersionInfoSize (str, &dw);	if (dwSize == 0)		return ver = 0;	LPVOID pvVer = _alloca (dwSize);	ZeroMemory (pvVer, dwSize);	if (FALSE == GetFileVersionInfo (str, 0, dwSize, pvVer))		return ver = 0;		VS_FIXEDFILEINFO *pFileInfo = NULL;	UINT u;	if (FALSE == VerQueryValue (pvVer, _T ("//"), (LPVOID*)&pFileInfo, &u))		return ver = 0;		return ver = pFileInfo->dwFileVersionLS >> 16;}

static CComBSTR GetFileVersion(const TCHAR* cszFilePath){	CComBSTR strVersion;	TCHAR szFilePath[MAX_PATH]; _tcscpy(szFilePath, cszFilePath);	DWORD hVersionInfo;	DWORD cbVersionInfo = GetFileVersionInfoSize(szFilePath, &hVersionInfo);	if(cbVersionInfo > 0)	{		char *rgchVersionInfo = new char[cbVersionInfo];		if(GetFileVersionInfo(szFilePath, hVersionInfo, cbVersionInfo, rgchVersionInfo))		{			UINT cbFixedFileInfo;			VS_FIXEDFILEINFO* pffiFixedFileInfo;			if(VerQueryValue(rgchVersionInfo, "//", (void**)&pffiFixedFileInfo, &cbFixedFileInfo))			{				int ver_major = HIWORD( pffiFixedFileInfo->dwFileVersionMS ) ;				int ver_minor = LOWORD( pffiFixedFileInfo->dwFileVersionMS ) ;				int ver_build = HIWORD( pffiFixedFileInfo->dwFileVersionLS ) ;				int ver_year  = LOWORD( pffiFixedFileInfo->dwFileVersionLS ) ;				char szVersion[12 * 4 + 3 + 1];				wsprintf(szVersion, "%d.%d.%d.%d", ver_major, ver_minor, ver_build, ver_year);				strVersion = szVersion;			}		}		delete rgchVersionInfo;	}	return strVersion ;}

String TfrmMain::refreshVersion(){    DWORD dwHandle = 0, dwVersionInfoSize;    UINT uLength;    LPVOID pFileInfo, ptr;    String sOut; // 
C++ GetFireRate函数代码示例
C++ GetFileType函数代码示例