qt下unsigned char *与QString之间的相互转换

//unsiged char *转QString		

unsigned char  *str = "fdd" ;

char *str1 = (char *)str;

QString str2 = QString(QLatin1String(str1));

//QString 转化成char *

QString str = "fdd";

QByteArray ba = str.toLatin1();

unsigned char * str1  = (unsigned char *)ba.data;