c++ - imread(openCV),QString unicodes

Question

cv::Mat img = cv::imread("../赤月/lena.jpg");
if(img.empty()) std::cout<<"empty image"<<std::endl;

Or

QString const image_name = "../赤月/lena.jpg";
cv::Mat img = cv::imread(image_name_.toAscii().constData());
if(img.empty()) std::cout<<"empty image"<<std::endl;

The api of imread accept std::string, what if I need unicode support?

Answer 1

After Niko show me the link, I know how to solve the problem by Qt

QTextCodec *codec = QTextCodec::codecForName("UTF-8");
QTextCodec::setCodecForLocale(codec);
QTextCodec::setCodecForCStrings(codec);
QTextCodec::setCodecForTr(codec);

QString const image_name = "../赤月/lena.jpg";
cv::Mat img = cv::imread(image_name_.toAscii().constData());

Now the codes work perfectly, thanks to all of you.