[Qt-interest] QPixmap return null pixmap on VC

[OSProg]

Hi, Thanks for the reply! You are correct - I moved(renamed) the folder 
after building Qt. I've replaced the all old paths in files with the new 
one (at least I think so). I'll try what returns 
"supportedImageFormats()" tomorrow morning at work. Regards, Nikolay
> Ok, then something seems to go wrong with your plugin loading. (Png is 
> handled directly in QtGui, thus needs no plugin) Two more questions: - 
> Did you move the Qt directory to another directory after building Qt? 
> - Does the output of "qDebug() << 
> QImageReader::supportedImageFormats();" contain "jpeg" or "jpg"? 
> Regards, Alessandro OS Prog wrote:
>> > Hi,
>> > 
>> > Thanks for the reply!
>> > 
>> > Yes the dll(s) are built:
>> > 07/04/2009  16:55           120,832 qjpeg4.dll
>> > 07/04/2009  16:55               845 qjpeg4.exp
>> > 07/04/2009  16:55             2,032 qjpeg4.lib
>> > 07/04/2009  16:55           235,008 qjpegd4.dll
>> > 07/04/2009  16:55               848 qjpegd4.exp
>> > 07/04/2009  16:55           660,024 qjpegd4.ilk
>> > 07/04/2009  16:55             2,044 qjpegd4.lib
>> > 07/04/2009  16:55         1,092,608 qjpegd4.pdb
>> > 
>> > Yes, with .png it works.
>> > 
>> > Regards,
>> > Nikolay
>> > 
>> > 
>> >     ----------------------------------------------------------------------
>> > 
>> >     Message: 1
>> >     Date: Thu, 09 Apr 2009 12:54:16 +0200
>> >     From: Alessandro Portale <alessandro.portale at trolltech.com
>> >     <mailto:alessandro.portale at trolltech.com>>
>> >     Subject: Re: [Qt-interest] QPixmap return null pixmap on VC
>> >     To: qt-interest at trolltech.com <mailto:qt-interest at trolltech.com>
>> >     Message-ID: <49DDD3D8.7040405 at trolltech.com
>> >     <mailto:49DDD3D8.7040405 at trolltech.com>>
>> >     Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>> > 
>> >     Hi,
>> > 
>> >     I have two questions in order to narrow down what goes wrong:
>> >     - Was the <qtfolder>/plugins/imageformats/qjpeg[d]4.dll built?
>> >     - Would it work with a .png image?
>> > 
>> >     Regards,
>> >     Alessandro Portale
>> > 
>> >     OS Prog wrote:
>> >      > Hi,
>> >      >
>> >      > The code:
>> >      > QPixmap *pixmap1 = new QPixmap("images/scroll.jpg");
>> >      >
>> >      > returns a null pixmap when I build it with VC. The same code
>> >     works when
>> >      > it is built with mingw.
>> >      > I tried to specify the whole path, like "QPixmap *pixmap1 = new
>> >      > QPixmap("C:/Work/SVN/Qt/VCProj/debug/images/scroll.jpg");", but it is
>> >      > the same.
>> >      >
>> >      > Where could be the problem?
>> >      >
>> >      > I just compiled the Qt SDK for Windows with "VC2008 Express"'s
>> >     compiler
>> >      > in separate folder. The original folder is with mingw.
>> >      >
>> >      > Regards,
>> >      >

>  Nikolay
>