c++ - 如何检索 Windows EXE 或 DLL 的版本号？

Question

如何在运行时检索存储在 Windows exe/dll 中的版本信息？此信息是使用资源文件手动设置的。

Answer 1

这是使用标准 Windows API 函数的 C++ 方法:

try
{
    TCHAR szFileName[ MAX_PATH ];
    if( !::GetModuleFileName( 0, szFileName, MAX_PATH ) )
        throw __LINE__;

    DWORD nParam;
    DWORD nVersionSize = ::GetFileVersionInfoSize( szFileName, &nParam );
    if( !nVersionSize )
        throw __LINE__;

    HANDLE hMem = ::GetProcessHeap();
    if( !hMem )
        throw __LINE__;

    LPVOID lpVersionData = ::HeapAlloc( hMem, 0, nVersionSize );
    if( !lpVersionData )
        throw __LINE__;

    if( !::GetFileVersionInfo( szFileName, 0, nVersionSize, lpVersionData ) )
        throw __LINE__;

    LPVOID pVersionInfo;
    UINT nSize;
    if( !::VerQueryValue( lpVersionData, _T("\\"), &pVersionInfo, &nSize ) )
        throw __LINE__;

    VS_FIXEDFILEINFO *pVSInfo = (VS_FIXEDFILEINFO *)pVersionInfo;
    CString strVersion;
    strVersion.Format( _T(" version %i.%i.%i.%i"),
        pVSInfo->dwProductVersionMS >> 16,
        pVSInfo->dwProductVersionMS & 0xFFFF,
        pVSInfo->dwProductVersionLS >> 16,
        pVSInfo->dwProductVersionLS & 0xFFFF
        );
    GetDlgItem( IDC_ABOUT_VERSION )->SetWindowText( strAppName + strVersion );

    if( !HeapFree( hMem, 0, lpVersionData ) )
        throw __LINE__;
}
catch( int err )
{
    ASSERT( !err ); // always break on debug builds to inspect error codes and such

    DWORD dwErr = ::GetLastError();

    // handle memory cleanup...
}

请注意，catch 部分纯粹是教育性的 - 在实际情况下，您会在内存分配后正确清理并实际使用错误代码!