[Development] Question about QtSerialPort addons macro like QT_BEGIN(END...)_NAMESPACE_XYZ...

[Denis Shienkov]

I answer to myself.

If add in serialport_global.h also these lines:
..
#if defined QT_BEGIN_MOC_NAMESPACE
#  undef QT_BEGIN_MOC_NAMESPACE
#endif
#if defined QT_END_MOC_NAMESPACE
#  undef QT_END_MOC_NAMESPACE
#endif

#define QT_BEGIN_MOC_NAMESPACE QT_BEGIN_NAMESPACE_SERIALPORT
#define QT_END_MOC_NAMESPACE QT_END_NAMESPACE_SERIALPORT
..

then the MOC without error and the project compiles successfully.

But is it correct or not for Addons modules? Or is it better to replace macros QT_BEGIN (END) _NAMESPACE_XYZ to the Qt standard macros default QT_BEGIN (END) _NAMESPACE ??

Best regards,
Denis


17.02.2012, 17:10, "Denis Shienkov" <scapig2 at yandex.ru>:
> Hi, all.
>
> I am developing a new addon for Qt5 in Gerrit /playground/QtSerialPort and I have a
> problem with the macros QT_BEGIN_NAMESPACE_SERIALPORT, QT_END_NAMESPACE_SERIALPORT and etc.
>
> With this code in the global file serialport-global.h
> ...
> #ifndef SERIALPORT_GLOBAL_H
> #define SERIALPORT_GLOBAL_H
>
> #include "qglobal.h"
>
> #if defined(QT_ADDON_SERIALPORT_LIB)
> #  define Q_ADDON_SERIALPORT_EXPORT Q_DECL_EXPORT
> #else
> #  define Q_ADDON_SERIALPORT_EXPORT Q_DECL_IMPORT
> #endif
>
> #if defined(QT_NAMESPACE)
> #  define QT_BEGIN_NAMESPACE_SERIALPORT namespace QT_NAMESPACE { namespace QtAddOn { namespace SerialPort {
> #  define QT_END_NAMESPACE_SERIALPORT } } }
> #  define QT_USE_NAMESPACE_SERIALPORT using namespace QT_NAMESPACE::QtAddOn::SerialPort;
> #  define QT_PREPEND_NAMESPACE_SERIALPORT(name) ::QT_NAMESPACE::QtAddOn::SerialPort::name
> #else
> #  define QT_BEGIN_NAMESPACE_SERIALPORT namespace QtAddOn { namespace SerialPort {
> #  define QT_END_NAMESPACE_SERIALPORT } }
> #  define QT_USE_NAMESPACE_SERIALPORT using namespace QtAddOn::SerialPort;
> #  define QT_PREPEND_NAMESPACE_SERIALPORT(name) ::QtAddOn::SerialPort::name
> #endif
> */
>
> // a workaround for moc - if there is a header file that doesn't use processmanager
> // namespace, we still force moc to do "using namespace" but the namespace have to
> // be defined, so let's define an empty namespace here
> QT_BEGIN_NAMESPACE_SERIALPORT
> QT_END_NAMESPACE_SERIALPORT
>
> #endif // SERIALPORT_GLOBAL_H
> ...
>
> Project addon does not compile, there are errors in the files moc_xxx.cpp who say that in project - classes and enums, etc. not defined.
>
> Although, in all h/cpp files have macros like QT_BEGIN_NAMESPACE_SERIALPORT and QT_END_NAMESPACE_SERIALPORT.
> I designed the project, by analogy with the addons projects of the playground, such as qtprojectmanager, qtjsonstream...
>
> If I define a macro as a stub (empty) - a project compiles without errors.
>
> Please help me.
>
> Best regards,
> Denis