Hi,
i just saw that you throw an error if compiled with qt4.8. Couldn't you make
this a warning, I'm compiling on 4.8 with all my systems (win, unix, osx) and
didn't experience any problems yet. Now I can't compile anymore without
changing the source or downgrading my qt :(.

Which compiler are you using on Windows.

There seems to be an issue with Qt 4.8.x and mingw that crashes the viewer,
when it loads a file (likely the painting to pixmap from another thread is the
is not correctly handled). See:
https://sourceforge.net/tracker/?func=detail&aid=3487550&group_id=250595&atid
=1126426

On OSX it is 4.8.2, to look up the other systems I have to wait until tomorrow

Ok, i just saw that I use 4.8.1 on Win and Ubuntu, don't know the mingw
version right now though

So, you're using Qt 4.8.x and mingw, and the viewer works? Then I'd be really
interested in the mingw version.

Benito, are you sure, that it doesn't work on OSX? Anyway is it relatedt to
the same bug report I linked above? I still suspect, that this one a mingw
issue concerning insufficient memory alignment. However, that has to be
checked further.

BTW: Did anyone compile using Qt 4.8.x and MSVC?

Are you compiling for 32 or 64 bit?

Benito, are you sure, that it doesn't work on OSX?

That is what wondertree said here
http://sourceforge.net/projects/texstudio/forums/forum/907839/topic/5381131/i
ndex/page/3

On 08/29/2012 12:16 AM, SourceForge.net wrote:

Because I don't know how (and where) to define "NO_POPPLER_PREVIEW" I've
commented the part that throws that error:

/*#if (QT_VERSION >= 0x040800) && (defined(Q_WS_WIN) || defined(Q_WS_MACX))
#error Warning: The internal pdf viewer does not work (i.e. crashes) when compiled with qt4.8.x on Windows/Mac
#error You should either downgrade to qt4.7.x or disable the internal pdf viewer by defining NO_POPPLER_PREVIEW
#endif*/

I have used Sumatra since I switched to the SVN versions of Texstudio.

So you are not using the internal pdf viewer at all?

Well, then it won't bother you if it crashes...

On 08/29/2012 01:04 AM, SourceForge.net wrote:

Like spieb mentioned, TXS will not compile without qt4.7. I did not experience
any crashes using the internal viewer on my Mac OSX 10.8 that wondertree
reported. I used the internal viewer extensively. I side with spieb in adding
a warning if this is indeed the case for the SVNs. Downgrading to qt4.7.4 is
problematic using brew as qt4.7.4 does not compile and install via this
procedure:

You need to switch to the last version of Qt if you installed 4.8 or higher.
List all version of qt available via brew
$ cd /usr/local/Cellar
$ brew versions qt
Run the git command next to the version of qt (4.7.4) you want to install. and
install qt version using brew.
$ git checkout 83f742e /usr/local/Library/Formula/qt.rb
$ brew upgrade qt
List all install versions of qt. and switch to using any of the installed
versions.
$ brew info qt
$ brew switch qt 4.7.4

I also use the internal viewer extensively, never had any problems yet, on OSX
i compile a X64 version. It might be that the problem wondertree is
experiencing is caused because of the way it was installed. I installed qt
from homebrew (a command line installer) with the option "brew install poppler
--with-qt4 --enable-xpdf-headers". wondertree instead used the gui version and
had to manually fix a lot of stuff (like adding empty folders to get rid of
warnings). I never had to do such things, it worked out of the box for me (at
least with the changes to texstudio.pro i described).

For windwos I have no idea where to find the mingw version. It just says "Qt
4.8.1 for Desktop - MinGW (Qt SDK)". I have to just MinGW since MSVC throws
numerous compilation errors. It looks like i compiling a 32bit version under
windows. At least my qmake call includes "win32-g++" and also i call
"mingw32-make.exe". It might be that I use a different libpoppler-qt4 version
though. I remember that the first time i was compiling texstudio I had a lot
of missing dll's that I scratched together from the qt installation directory
and from some google searches. My libpoppler and libpoppler-qt4 libs have the
creation date 05.02.2012 14:07, but i didn't compile it myself.

Could you provide the libpoppler and libpoppler-qt4 versions you use for a
test?

Benito. Thank you for allowing Qt4.8 again!

I just noticed that im using the same libpoppler dlls that you provided with
the official texstudio 2.3 release (SVN2471). However I had to use updated qt-
dlls to even get texstudio started. I installed the qt version "QtSdk-online-
win-x86-v1_2_1" and than copied the relevant qt-dlls from ...
QtSDK\Desktop\Qt\4.8.1\mingw\lib.

Ok, I'll look into that direction.

I compiled using qt 4.8.1 for svn 3240, it seems ok. if there is a specific
document to test the internal pdfviewer, I can also do some tests

There is no specific document. The error I reported occured for every document
as soon as the first page was loaded. Can you please give additional
information on the build: which compiler are you using. Where did you take the
dlls from (qt and poppler)?

Sorry, incomplete information:
on windows 7 64bit using Qt SDK with mingw.

Where did you take the dlls from (qt and poppler)?

I grabbed them sometime ago, but I cannot remember exactly :(