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[BomBielFil <>]

ok thanks, now it runs
another simple question (sorry but I'm newbie in QT_widget)
I try this program:

#include <CGAL/basic.h>
#include <CGAL/Cartesian.h>
#include <CGAL/IO/Qt_widget.h>

#include <qapplication.h>

typedef CGAL::Cartesian<int> Rep;
typedef CGAL::Point_2<Rep> Point_2;
typedef CGAL::Segment_2<Rep> Segment;

int main( int argc, char **argv )
{
  QApplication app( argc, argv );
  CGAL::Qt_widget *w = new CGAL::Qt_widget();
  app.setMainWidget( w );
  w->resize(600, 600);
  w->set_window(0, 600, 0, 600);
  w->show();
  w->lock();
  *w << CGAL::BackgroundColor(CGAL::WHITE)<<CGAL::RED;
  *w << Segment(Point_2(100,100), Point_2(400,400));
  w->unlock();
  return app.exec();
}


Why I don't see the segment??  I see only a white window
-Bombielfil-

2008/3/25, Laurent Rineau <>:

On Tuesday 25 March 2008 15:03:48 BomBielFil wrote:
> I tried to introduce -lqt-mt in my g++ command: "g++ -Wall
> -I/usr/local/include -I/usr/include/qt3 -L/usr/local/lib -lCGAL -lm -lqt-mt
> disegno.cpp  -lstage -o disegno `pkg-config --cflags --libs gtk+-2.0`"
>
> but now the error is:
>
> disegno.cpp:(.text+0x171): undefined reference to
> `CGAL::Qt_widget::Qt_widget(QWidget*, char const*)'


You forgot to link with the CGALQt library, and it seems that you use it.
Add "-lCGALQt" to your link flags, if you really use the CGAL::Qt_widget
class. However, it seems that you want to use Gtk+-2.0, and not Qt. In case
case, you should remove from your code all headers that contain "Qt_widget"
in their names.


--

Laurent Rineau
INRIA - Sophia Antipolis
BP 93, 2004 Route des Lucioles
06902 Sophia Antipolis Cedex FRANCE
Tel: +33 4 92 38 78 62 (Fax: +33.4.97.15.53.95)
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