Gnome::Canvas::RichText question

[Tim Blechmann <tim klingt org>]

hi all,

what's the preferred way to query the content of a
Gnome::Canvas::RichText instance.

i've experienced the following:

Gnome::Canvas::RichText text(..);

...

text->property_text(); 
returns the initial string, given in the constructor. however, if the
text is changed from user input, this is not updated.

text->get_buffer()->get_text(); 
returns the current string (the one that i want to have), but calls to
get_buffer() turned out result in a highly unstable system:

Gtk-CRITICAL **: gtk_text_buffer_get_iter_at_offset: assertion
`GTK_IS_TEXT_BUFFER (buffer)' failed

i've attached a hacked version of examples/canvas/canvas.cc to
demonstrate the crash ... maybe someone knows, what's going on there ...

thanks ... tim

--
tim klingt org    ICQ: 96771783
http://www.mokabar.tk

A paranoid is a man who knows a little of what's going on.
  William S. Burroughs

// This example was started by Guillaume Laurent.
// It has become a place to dump code that tests parts of the
// gnomemm canvas code. Little thought has been given to the
// actual on-screen output.

#include <libgnomecanvasmm.h>

class CanvasExample : public Gnome::Canvas::Canvas
{
public:
  CanvasExample();
  virtual ~CanvasExample();

protected:
  Gnome::Canvas::Group m_canvasgroup;
  Gnome::Canvas::RichText *m_rtext;
};

CanvasExample::CanvasExample()
  : m_canvasgroup(*(root()), 0, 0)
{
  m_rtext = new Gnome::Canvas::RichText(m_canvasgroup, 10, 10, "Some other Text");
  m_rtext->property_width() = 100.0;
  m_rtext->property_height() = 30.0;

  Glib::ustring label = m_rtext->get_buffer()->get_text();

  std::cout << label << std::endl;
}

CanvasExample::~CanvasExample()
{
  delete m_rtext;
}


//MainWin:

class MainWin : public Gtk::Window
{
public:
  MainWin(const std::string& title);

protected:
  //Member widgets:
  CanvasExample m_canvas;
};

MainWin::MainWin(const std::string& title)
{
  set_title (title);
  add(m_canvas);

  show_all();
}

//main():

int main(int argc, char *argv[])
{
  Gnome::Canvas::init();
  Gtk::Main app(argc, argv);

  MainWin mainwin("Gnome::Canvas Example");
  app.run(mainwin);

  return 0;
}

Attachment: signature.asc
Description: This is a digitally signed message part