How to set the absolute path of log files correctly（chinese or japanese）

[toby20130333]

Hi support:
this is a test code:
When the fileName 's path contains chinese or janpanse,the app crash,cannot open the fileName
I need help!
Thank you
`
QString fileName = QString("%1").arg(nLog);
{
auto stdout_sink = std::make_sharedspdlog::sinks::stdout_color_sink_mt();
stdout_sink->set_level(spdlog::level::off);

    auto rotating_sink
        = std::make_shared<spdlog::sinks::rotating_file_sink_mt>(fileName.toStdString().c_str(),
                                                                 maxFileSize,
                                                                 maxFileCount);
    std::vector<spdlog::sink_ptr> sinks{stdout_sink, rotating_sink};
    auto logger = std::make_shared<spdlog::async_logger>("normal_logger",
                                                         sinks.begin(),
                                                         sinks.end(),
                                                         spdlog::thread_pool(),
                                                         spdlog::async_overflow_policy::block);
    logger->set_pattern("%v");

    spdlog::register_logger(logger);
}

`

[tt4g]

Print error messages with try-catch.
Most questions about not being able to create log files are caused by permission errors.

try {

    // your code here.

} catch (const std::exception &ex) {
    std::cerr << ex.what() << std::endl;
}

[tt4g]

Maybe duplicate #2510

[toby20130333]

@tt4g
But the issue cannot sovled my crash
I fixed with SPDLOG_WCHAR_FILENAMES marco on windows

[tt4g]

No source code or error messages are provided, so I have no idea what the cause is.

At least #2510 did not solve the problem with SPDLOG_WCHAR_FILENAMES macro, but with QString::toLocal8Bit().data().

[amanjha491]

QString fileName = QString("%1").arg(nLog);
{
auto stdout_sink = std::make_sharedspdlog::sinks::stdout_color_sink_mt();
stdout_sink->set_level(spdlog::level::off);

// Convert QString to UTF-8 encoded std::string
auto utf8FileName = fileName.toUtf8().constData();

auto rotating_sink = std::make_shared<spdlog::sinks::rotating_file_sink_mt>(
    utf8FileName, maxFileSize, maxFileCount);

std::vector<spdlog::sink_ptr> sinks{stdout_sink, rotating_sink};
auto logger = std::make_shared<spdlog::async_logger>(
    "normal_logger", sinks.begin(), sinks.end(),
    spdlog::thread_pool(), spdlog::async_overflow_policy::block);
logger->set_pattern("%v");

spdlog::register_logger(logger);

}

[toby20130333]

@amanjha491 Thank you ,I will try it