正则表达式判断字符有乱码(正则文法转正则表达式)

#include <QtCore/QCoreApplication>
#include <iostream>
#include <string>
#include <regex>

using namespace std;

int main(int argc, char *argv[])
{ 
   
	QCoreApplication a(argc, argv);
	bool foundmatch = false;
	try { 
   
		std::wregex re(LR"([a-zA-Z]:\\[\.\w-_\u4e00-\u9fa5\\]*)"); //windows文件夹路径
		std::wstring subject = L"D:\\Tools\\软件\\xournalpp-1.0.17-windows";
		foundmatch = std::regex_search(subject, re);
		cout << foundmatch << endl;
	}
	catch (std::regex_error& e) { 
   
		cout << e.what() << endl;
	}
	return a.exec();
}

#include <QtCore/QCoreApplication>
#include <QJSEngine>
#include <QDebug>
#include <QFile>
#include <QTextStream>

using namespace std;

int main(int argc, char *argv[])
{ 
   
	QCoreApplication a(argc, argv);
	QJSEngine js;
	QJSValue module = js.importModule("D:/tcl_me/math.mjs");
	QJSValue sumFunction = module.property("sum");
	QString str = "38u48djhfod中国，@##@!_)+bia發財";
	QJSValueList args;
	args << str;
	QJSValue result = sumFunction.call(args);
	if (result.isError())
	{ 
   
		qDebug() << result.toString();
		return -1;
	}
	qDebug() << result.toBool();
	return a.exec();
}

export function sum(subject) { 
   
	var reg = /[\p{Han}]+/g;
    var ret = subject.match(reg);
    return ret;
}