Problem running a qt app.

Rene Märten delta_x at gmx.net
Wed Jun 14 21:59:31 UTC 2000


PLEASE IN ENGLISH !!

On Wed, 14 Jun 2000, you wrote:
> Salut,
> 
> lorsqu'on utilise le mécanisme SIGNAL/SLOT il faut auparavant passer le fichier
> à un préprocesseur (MOC). Il ne faut pas oublier aussi, d'ajouter dans le
> fichier la macro Q_OBJECT.
> 
> voici le code modifié pour qu'il fonctionne :
> bonne chance !
> 
> 
> //FICHIER  'INCLUDE'
> #include <qapplication.h>
> #include <qpushbutton.h>
> #include <qfont.h>
> #include <stdlib.h>
> class MyApplication : public QApplication
> {
> Q_OBJECT
> public:
> MyApplication (int a, char *t[]);
> private:
> QPushButton *go;
> protected slots:
> void slotConnect();
> 
> };
> 
> //FICHIER SOURCE MODIFIE
> #include "test.h"
> MyApplication::MyApplication (int a, char *t[]) : QApplication (a, t)
> {
> go = new QPushButton ("Go !");
> go->setFont ( QFont ( "Times", 18, QFont::Bold ) );
> setMainWidget (go);
> go->show();
> connect (go, SIGNAL(clicked()),SLOT(slotConnect()));
> }
> 
> void MyApplication::slotConnect()
> {
> system ("kvt &");
> }
> 
> int main( int argc, char **argv )
> {
> MyApplication a( argc, argv );
> return a.exec();
> }
> 
> ensuite compiler les fichiers de la facon suivante:
> 
> 1.  /usr/lib/qt/bin/moc test.h -omoc_test.cpp
> 2.   g++ test.cpp moc_test.cpp  -lqt -I/usr/lib/qt/include -L/usr/lib/qt/lib
> -otest  
> 
> 
> 
> 
> Le mer, 14 jun 2000, David BOURIAUD a écrit :
> > 
> > Hi to all !
> > I'm confronted to the following problem :
> > I've modified the t2 qt tutorial so as to have a button that would call
> > a kvt terminal.
> > I'm not writing this app under kdevelop, for, by now, I'd just like to
> > know how qt works.
> > When I compile the following program, it works fine (eg. The compiler
> > does not complain about anything).
> > But when I run it, I get the following :
> > QObject::connect: No such slot QApplication::slotConnect()
> > QObject::connect:  (receiver name: 't2')
> > What's wrong with my source code ?
> > If anyone could help... Thanks by advance !
> > 
> > The source code of my file :
> > ----------------------- begin of source code
> > ------------------------------
> > #include <qapplication.h>
> > #include <qpushbutton.h>
> > #include <qfont.h>
> > #include <stdlib.h>
> > 
> > class MyApplication : public QApplication
> > {
> > public:
> >     MyApplication (int a, char *t[]);
> > private:
> >     QPushButton *go;
> > protected slots:
> >     void slotConnect();
> > 
> > };
> > 
> > MyApplication::MyApplication (int a, char *t[]) : QApplication (a, t)
> > {
> >     go = new QPushButton ("Go !");
> >     go->setFont ( QFont ( "Times", 18, QFont::Bold ) );
> >     setMainWidget (go);
> >     go->show();
> >     connect (go, SIGNAL(clicked()),SLOT(slotConnect()));
> > }
> > 
> > void MyApplication::slotConnect()
> > {
> >     system ("kvt &");
> > }
> > 
> > 
> > int main( int argc, char **argv )
> > {
> >     MyApplication a( argc, argv );
> >     return a.exec();
> > }
> > ----------------------- end of source code
> > --------------------------------
> > 
> > The Makefile provided with the t2 tutorial hasn't been modified at all.
> > 
> 
> ----------------------------------------
> Content-Type: text/x-vcard; name="david.bouriaud.vcf"
> Content-Transfer-Encoding: 8BIT
> Content-Description: Card for David BOURIAUD
> ----------------------------------------
-- 
Kind Regards Rene Märten
E-Mail: Delta_x at Codewizards.org
Buisness: rmaerte1 at visteon.com
Home:   http://www.codewizards.de/kcommander




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