1、QString -> QByteArray
QString str = "123";
QByteArray array = str.toUtf8(); //中文
array = str.toLocal8Bit();
2、QByteArray - > char *
char *p = arrya.data();
3、char * - > QString
char *p = "abc";
QString c = QString(p);
1、QString -> QByteArray
QString str = "123";
QByteArray array = str.toUtf8(); //中文
array = str.toLocal8Bit();
2、QByteArray - > char *
char *p = arrya.data();
3、char * - > QString
char *p = "abc";
QString c = QString(p);