Method format

Log.h:41–52

    static volatile LogHandler mHandler;
public:
    static void format(Level level, const WCHAR *tag, _Printf_format_string_ const WCHAR *fmt, ...) {
        va_list varg1;
        LogHandler h = mHandler;
        if (h == nullptr || fmt == nullptr) {
            return;
        }
        WCHAR buffer[1024] = {};
                va_start(varg1, fmt);
        StringCchVPrintfW(buffer, 1024, fmt, varg1);
                va_end(varg1);
        h(level, tag, buffer);
    }

    static void logBuffer(Level level, const WCHAR *tag, const WCHAR *msg) {
        LogHandler h = mHandler;