Qstring conversion char*

take QString turn char *, Need to use QByteArray class ,QByteArray See... For the description of class Qt Help document .
because char * Finally, there is one ’\0’ As an end sign , And use QString::toLatin1() The string will be followed by ’\0’.

QString str;
char* ch;
QByteArray ba = str.toLatin1(); // must
ch=ba.data();

That's it QString towards char * The transformation of . When the tested program runs, it will not appear bug. Pay attention to the 3 That's ok , We must add , Write alone , Can not be str.toLatin1().data() This step is complete , Otherwise, there may be mistakes .

Reference resources
QString and char* Mutual conversion of