QString与char*互转

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char*转QString

char* str = "lansheng";
QString qstr = QString(QLatin1String(str));

QString转char*

QString qstr = "lansheng";
char* str = qstr.toStdString().c_str();

附：
const char*转char*

const char* cstr = "lansheng";
char* str = new char[1024];
strcpy(str, cstr);