Hi Benny
This look like you forgot to link with qt library. This message is well
know by gcc user
"undefined reference to `QString::shared_null'
[/usr/lib/qt3/include/qstring.h] "
In Eclipse, Have you create a Standart Project C++ or a Managed Project
C++ ?
The standart project use you makefile, so if you compile fine in a
shell, you compile fine in eclipse (eclipse do a "make all" in a shell)
The managed project use an eclipse's makefile and probably don't link
with qt3 library (you must precise to eclipse all information to do a good
compilation).
But like Robert say before, this is not the good place to speak about
this topic.
Try to learn more on eclipse and go on eclipse forum/mailling list.
Cheer
David Callu
2006/11/17, benny porat <[EMAIL PROTECTED]>:
someone I am desperate I try anything,
I can't manage to work with OSG and QT together in eclipse,
I found a plugin for QT to eclipse, but than I can't work with osg,
someone know who to manage the eclipse to work with both of them?
thanks
NB
On 11/17/06, Whitfield, John M. (SED/TMI) <
[EMAIL PROTECTED]> wrote:
>
> You need to not be defining those pointers at the top, they don't do
> anything and the syntax is weird. You should only have from the includes
> down, and there is a good qt forum at
>
>
>
> http://www.qtforum.org/
>
>
>
> -John
>
>
> ------------------------------
>
> *From:* [EMAIL PROTECTED] [mailto:
> [EMAIL PROTECTED] * On Behalf Of *benny porat
> *Sent:* Thursday, November 16, 2006 11:36 AM
> *To:* osg users
> *Subject:* Re: [osg-users] GUI
>
>
>
> ops, he did those error because I put this kine before the include,
> I put them after and the error of before came back,
> he write me:
> undefined reference to `QString::shared_null'
> [/usr/lib/qt3/include/qstring.h]
> undefined reference to `QStringData::deleteSelf()'
> [/usr/lib/qt3/include/qstring.h]
> undefined reference to `QApplication::QApplication(int&, char**)'
> main.cpp
> undefined reference to `QString::QString(char const*)' main.cpp
> .
> .
> .
>
> someone, undestand way? what shold I do to compile it in eclipse?
>
> On 11/16/06, *benny porat* < [EMAIL PROTECTED]> wrote:
>
> he is know give an error from the line I add, he wrote:
> /main.cpp:10: error: expected constructor, destructor, or type
> conversion before '*' token
> ../main.cpp:11: error: 'QString' does not name a type
> ../main.cpp:12: error: expected constructor, destructor, or type
> conversion before '*' token
> ../main.cpp:13: error: expected constructor, destructor, or type
> conversion before '*' token
>
> for this prgoram:
>
>
> /****************************************************************
> **
> ** Qt tutorial 1
> **
> ****************************************************************/
>
>
> QApplication *qApp;
> QString QString::null="";
> QStringData *QString::shared_null=0;
> QWidget *QApplication::main_widget = 0;
>
> #include <qapplication.h >
> #include <qpushbutton.h>
>
>
> int main( int argc, char **argv )
> {
> QApplication a( argc, argv );
> qApp = &a;
>
> QPushButton hello( "Hello world!", 0 );
> hello.resize( 100, 30 );
>
> a.setMainWidget( &hello );
> hello.show();
> return a.exec();
> }
>
> I think I dont understand you, what I do wrong?
>
> thanks
> NB
>
>
>
> On 11/16/06, *Dieter Pfeffer* < [EMAIL PROTECTED]>
> wrote:
>
> I had the same problems a time ago - try:
>
>
>
> QApplication *qApp;
>
> QString QString::null="";
>
> QStringData *QString::shared_null=0;
>
> QWidget *QApplication::main_widget = 0;
>
> int main( int argc, char **argv )
>
> {
>
> QApplication a( argc, argv );
>
> qApp = &a;
>
> ....
>
>
>
>
>
>
>
> Dieter
>
>
>
> Unclassified Mail
>
> -------------------------
>
>
>
> -----Original Message-----
> *From:* [EMAIL PROTECTED] [mailto:
> [EMAIL PROTECTED] On Behalf Of *benny porat
> *Sent:* Thursday, 16 November, 2006 15:49
> *To:* osg users
> * Subject:* Re: [osg-users] GUI
>
> I found this toturial
>
> http://doc.trolltech.com/3.3/tutorial1-01.html
>
> I try to compile it (I work with eclipse)
>
> and I get error that I dont understand what to do
>
> I gat error for every kine in the main:
>
> undefind reference to 'QString::shared_null....
>
> .
>
> .
>
> undefind reference to 'QApplication::QApplication(int&,char **)'
>
> ...
>
> and so on...
>
>
>
> I think that it something with the configure of the build?
>
> do you know what I need to do?
>
>
>
> thanks
>
> NB
>
>
> On 11/16/06, *Robert Osfield* < [EMAIL PROTECTED]> wrote:
>
> Hi Garret,
>
> On 11/16/06, Garrett Potts < [EMAIL PROTECTED]> wrote:
> > I am not sure of other peoples experiences. The visualization system
> I am
> > running based on OSG is very smooth on the Qt 4.1.4 version but when I
> > upgraded to 4.2 and without changing a line of code and just do a
> re-compile
> > the scene became very Jerky. Playing with Qt's timer interval it
> became
> > better but never looked into it further.
> >
> > Not sure if this information is useful but I am also curious if others
> have
> > experienced similar problems.
>
> I haven't seen this, but it sounds like the timer has been given a
> lower priority or simply implemented differently.
>
> Using GUI timers to drive redraws isn't ideal, for solid framerates
> you really need to run a separate graphics thread. For any serious
> vis-sim work this is essential. For interactive apps GUI timers will
> often suffice, but as you've found out you are at the mercy of the
> Windowing toolkits implementation of its timers.
>
> Robert.
> _______________________________________________
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>
>
>
>
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>
>
>
>
>
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>
>
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