www.qxorm.com

hello,

I need a little help.

I encounter 3 errors if i try to register my class :

the errors refer to QX_REGISTER_CPP_IMPORT_DLL(my_class)

syntax error : 'string'
syntax error : missing ; before qx:QxFactory<T> with [ T= my_class]
missing type specifier - int assumed...

qt version 4.5.2
boost 1.40
I use cl to compile it.

I did just like the example, QX_REGISTER_HPP_IMPORT_DLL on h file , and wrote template <> void register_class(QxClass<my_class>& t)
do you know what could be the reason for these errors?

thanks.

Hi,

Did you try to compile samples in "./test/" directory ?

There is 2 samples :
1- qxBlog : this is the source code of website tutorial
2- dll1, dll2, and exe : this is to show how to use QxOrm with shared libraries (.dll under Windows and .so under linux)

This 2 samples MUST compile and execute correctly to verify your installation (boost, Qt and QxOrm).

-----------------------------

For your problem and macro "QX_REGISTER_CPP_IMPORT_DLL", this is the point 4 of website tutorial :

You MUST NOT directly use "QX_REGISTER_CPP_IMPORT_DLL" or "QX_REGISTER_CPP_EXPORT_DLL" macro :
This is the same system when you develop with dll under Windows => you MUST define your own macro to export (your dll is compiling) or import (your dll is using) class or function.

So to start a project with QxOrm, the first thing to do is to create 2 files :
1- a "export.h" file to redefine your own macro
2- a "precompiled.h" file to reduce compilation time

The website tutorial explains in french how to use QxOrm (i will write an english traduction...)

If you have always your compilation problem, can you post your file ?

1- export.h
2- precompiled.h
3- my_class.h
4- my_class.cpp
5- main.cpp

Thank you for testing our library...

I have identical build errors.

Test solution is building correctly.
I am using VS 2008 / Qt 4.6.2 / Boost 1.42

I'll try to extract a code base reproducing these errors.

Cordialement,

Ben

Hi,

You can send me your source code at this address : contact@qxorm.com.
I think it is a problem with your 'export.h' file (or similar for your project)...

I found it:

The registering MACROS use BOOST_CLASS_EXPORT_GUID which need
#include <boost/serialization/export.hpp>

This include is usually provided by #include <QxMemLeak.h>

You are right : you need to include '#include <boost/serialization/export.hpp>' in each cpp files if you don't use '#include <QxMemLeak.h>'.
This is due to a precompiled header bug and boost serialization export file (at least with visual studio compiler).
Maybe boost team has resolved the problem (???) : in this case, you can add #include <boost/serialization/export.hpp> in your precompiled header file.

Thanks to post the solution