How to convert QString to std::string or char*?

[yangyunzhao]

If my QString only has ascii character, I can convert it to std::string or char* as follow:

QString x = "hello";
std::string str = x.toStdString();
str.c_str();

QString x = "hello";
std::string str = x.toStdString();
str.c_str();

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But if my QString has chinses character, I cannot conver it to std::string or char*.

QString x = " 你 好 ";
std::string str = x.toStdString(); //str will become Unrecognizable Code.
str.c_str();

QString x = " 你 好 ";
std::string str = x.toStdString(); //str will become Unrecognizable Code.
str.c_str();

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