You can do this:

Look this link C++ [cplusplus.com].

BR.

http://lmgtfy.com/?q=convert+qstring+to+const+char+*

Thanatos.jsse wrote:

You can do this:

1. QString myString = "BlaBla"
2. char* myChar = myString.toStdString().c_str();

Take care of the lifetime of these variables!
if you have an in parameter, you can do such things, although I would not got the way with std::string:

aditionally, check:

• QByteArray toAscii () const
• QByteArray toLatin1 () const
• QByteArray toLocal8Bit () const

It’s up to you, which encoding you use.
But all these functions return temporary objects, and calling constData returns the buffer of the temp objects. In the next line of code (when foo() returns) the temp object is destroyed and the buffer gets invalid!

So there is no way…

Luckily there is good old std c++ :
string appName = m_sAppName.toStdString();

Why should the be no way? I showed you some…

it is, but which format do you need?

• utf8?
• 7-bit ASCII?
• 8-bit ASCI with with regional code?
• MBCS?

all are conat char* formats.
QString is unicode.

in general, it is possible:

If you really need a const char* I would convert it to and std::string (but reagrd the conversion!) and use the std::string. Who shall otherwise handle the memory? who shall allocate it? who shall free it?

you can also do the following:

Take care that text.length() might not valid if you then convert to utf8!

I said there is no way because you said the const char * is lost immediatly at the next line of code.
But I found a way using usual c++, as edited in my previous post.

if you use toStdString, take care of the encoding.
QString is unicode. So That is why I’ve written the stuff of the encoding.

Gerolf wrote:

Take care of the lifetime of these variables!

Ok Gerolf, I’ll take care in the following contributions.

Thanks.

check this http://developer.qt.nokia.com/faq/answer/how_can_i_convert_a_qstring_to_char_and_vice_versa