[Bug 180908] New: digiKam does not compile with recent Qt 4.5 snapshot; QVariant issue

http://bugs.kde.org/show_bug.cgi?id=180908

           Summary: digiKam does not compile with recent Qt 4.5 snapshot;
                    QVariant issue
           Product: digikam
           Version: unspecified
          Platform: Compiled Sources
        OS/Version: unspecified
            Status: NEW
          Severity: wishlist
          Priority: NOR
         Component: general
        AssignedTo: [hidden email]
        ReportedBy: [hidden email]


Version:            (using Devel)
Installed from:    Compiled sources

Compiling digiKam with latest Qt 4.5 snapshot results in a compilation error.
The QVariant(void *) constructor has been made private.

When passing pointers to QVariant, the constructor QVariant(int typeOrUserType,
const void *copy) should be used. It may require registering a custom QVariant
type.

What follows is the detailed error message:

/usr/local/qt4/include/QtCore/qvariant.h: In member function 'virtual QVariant
Digikam::AbstractAlbumModel::data(const QModelIndex&, int) const':
/usr/local/qt4/include/QtCore/qvariant.h:408: error:
'QVariant::QVariant(void*)' is private
/mnt/svn/kde/trunk/extragear/graphics/digikam/digikam/albummodel.cpp:167:
error: within this context
make[2]: *** [digikam/digikam/CMakeFiles/digikam.dir/albummodel.o] Error 1
make[1]: *** [digikam/digikam/CMakeFiles/digikam.dir/all] Error 2
make: *** [all] Error 2
-- Failed: extragear/graphics


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--- Comment #1 from Pino Toscano <pino kde org>  2009-01-16 02:28:54 ---
(In reply to comment #0)
> When passing pointers to QVariant, the constructor QVariant(int typeOrUserType,
> const void *copy) should be used. It may require registering a custom QVariant
> type.

Or the simpler QVariant::fromValue(mypointer) / qVariantFromValue(mypointer).


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[Gilles Caulier-4]

http://bugs.kde.org/show_bug.cgi?id=180908


Gilles Caulier caulier gilles gmail com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|general                     |Portability
            Version|unspecified                 |0.10.0-svn




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Gilles Caulier caulier gilles gmail com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[hidden email]




--- Comment #2 from Gilles Caulier <caulier gilles gmail com>  2009-01-16 08:12:57 ---
Marcel,

I don't have Qt 4.5 here to test... What do you think about Pino tip from #1 ?

Gilles


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[Marcel Wiesweg]

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--- Comment #3 from Marcel Wiesweg <marcel wiesweg gmx de>  2009-01-16 17:19:11 ---
SVN commit 912061 by mwiesweg:

Declare Album* as Metatype and use QVariant::fromValue.
Did not compile with Qt4.5

CCBUG: 180908

 M  +2 -0      album.h  
 M  +1 -1      albummodel.cpp  


WebSVN link: http://websvn.kde.org/?view=rev&revision=912061


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--- Comment #4 from Marcel Wiesweg <marcel wiesweg gmx de>  2009-01-16 17:20:12 ---
Christoph, can you test compilation? We all dont have Qt4.5.


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--- Comment #5 from Christoph Feck <christoph feck mathe-kapiert de>  2009-01-16 18:18:04 ---
r912061 compiles with Qt 4.5 snapshot 20090116, thanks!

Note that Marble currently has the same bug, so I had to compile digiKam
without libmarblewidget support. All other dependencies enabled, as far as
CMake report is correct.


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Marcel Wiesweg marcel wiesweg gmx de changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED




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Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|0.10.0-svn                  |0.10.0




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[hidden email] changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Portability                 |Bundle-Tarball

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