int main(int argc, char **argv)
{
QApplication app(argc, argv);
QString str1 = "Test";
QByteArray ba = str1.toLatin1();
const char *str2 = ba.data();
printf("str2: %s", str2);
return app.exec();
}
Note that it is necessary to store the bytearray before you call data() on it, a call like the following
const char *c_str2 = str2.toLatin1().data();//wrong
will make the application crash as the QByteArray has not been stored and hence no longer exists.
To convert a char* to a QString you can use the QString constructor that takes a QLatin1String, e.g:
QString string = QString(QLatin1String(c_str2));
我觉得应该是这个样子吧：
char *str2 = "Test";
QString str1(QLatin1String(str2));
QString与const char *相互转换
原文：https://www.cnblogs.com/Stephen-Qin/p/13564567.html
