<![CDATA[QDataStream problem from 4.8 to 5.1 on MacOS]]>Hello,

I am getting error on this:
@ QByteArray ba;
QDataStream ds(&ba, QIODevice::WriteOnly);
//This will write the hash into the byte array (through the data stream)
ds << hash;@

The error output is:
licensefile.cpp:185: error: variable has incomplete type 'QDataStream'
QDataStream ds(&ba);
^

Any help please?

]]>https://forum.qt.io/topic/31480/qdatastream-problem-from-4-8-to-5-1-on-macosRSS for NodeTue, 16 Jun 2026 00:20:16 GMTMon, 02 Sep 2013 08:53:30 GMT60<![CDATA[Reply to QDataStream problem from 4.8 to 5.1 on MacOS on Mon, 02 Sep 2013 20:22:15 GMT]]>Could you show the part of your code that triggers this ?

]]>https://forum.qt.io/post/193840https://forum.qt.io/post/193840Mon, 02 Sep 2013 20:22:15 GMT<![CDATA[Reply to QDataStream problem from 4.8 to 5.1 on MacOS on Mon, 02 Sep 2013 12:50:52 GMT]]>no ...

]]>https://forum.qt.io/post/193771https://forum.qt.io/post/193771Mon, 02 Sep 2013 12:50:52 GMT<![CDATA[Reply to QDataStream problem from 4.8 to 5.1 on MacOS on Mon, 02 Sep 2013 12:06:43 GMT]]>Hi,

Are you using a custom hash ?

]]>https://forum.qt.io/post/193756https://forum.qt.io/post/193756Mon, 02 Sep 2013 12:06:43 GMT<![CDATA[Reply to QDataStream problem from 4.8 to 5.1 on MacOS on Mon, 02 Sep 2013 11:08:15 GMT]]>This is from qhash.h , i think this sould be something I need to put on my .pro.
I even not work with QHash.h ...

@template<typename T> inline uint qHash(const T &t, uint seed)
Q_DECL_NOEXCEPT_EXPR(noexcept(qHash(t)))
{ return (qHash(t) ^ seed); }@

]]>https://forum.qt.io/post/193741https://forum.qt.io/post/193741Mon, 02 Sep 2013 11:08:15 GMT<![CDATA[Reply to QDataStream problem from 4.8 to 5.1 on MacOS on Mon, 02 Sep 2013 09:28:03 GMT]]>Sorry I have no idea about that, can you perhaps post the code that generates this error?

]]>https://forum.qt.io/post/193717https://forum.qt.io/post/193717Mon, 02 Sep 2013 09:28:03 GMT<![CDATA[Reply to QDataStream problem from 4.8 to 5.1 on MacOS on Mon, 02 Sep 2013 09:22:42 GMT]]>Badger tkx, stupidity :) The funny thing is on 4.8 this was working :)
Now gave me the follow error:

Qt5.1.0/5.1.0/clang_64/include/QtCore/qhash.h:110: error: call to 'qHash' is ambiguous
Q_DECL_NOEXCEPT_EXPR(noexcept(qHash(t)))
^~~~~

]]>https://forum.qt.io/post/193714https://forum.qt.io/post/193714Mon, 02 Sep 2013 09:22:42 GMT<![CDATA[Reply to QDataStream problem from 4.8 to 5.1 on MacOS on Mon, 02 Sep 2013 09:14:41 GMT]]>did you perhaps forgot the #include <QDataStream>?

]]>https://forum.qt.io/post/193711https://forum.qt.io/post/193711Mon, 02 Sep 2013 09:14:41 GMT