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QString与const char *相互转换

时间:2020-08-26 14:25:05      阅读:190      评论:0      收藏:0      [点我收藏+]
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

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