[vtkusers] How to use ProgressEvent with Qt 3?

[Wagner Sales]

Hi all,

I'm trying to use the progress event from a vtkDICOMImageReader to
change the status ( percent ) on a QProgressBar widget.
I was readed the Examples/GUI/Qt, and based on this, StartEvent and
EndEvent are working fine to me by using the following code:

   // my connections, based on vtkEventQtSlotConnect
    m_connector->Connect( m_dicomReader, vtkCommand::EndEvent, this,
SLOT(slotEnded(vtkObject*)));
    m_connector->Connect( m_dicomReader, vtkCommand::StartEvent, this,
SLOT(slotStarted(vtkObject*)));
   // my slots:
void MyWidget::slotStarted(vtkObject* obj)
{
    std::cout << "---> Dicom reader started!" << endl;
}
void MyWidget::slotEnded(vtkObject* obj)
{
     std::cout << "---> Dicom reader ended!" << endl;
}

Well, before to set my QProgressBar progress I was just put some output
to std::cout ( code are at the end ).
Then, I'm trying to do the same with the ProgressEvent, but only one
time are showed to me the message:
-- Progress: 0
-- Progress Text:

Someone have some help or example to use then?
The code to understand are here:
//connection
m_connector->Connect( m_dicomReader, vtkCommand::ProgressEvent, this,
SLOT(slotProgressChanged(vtkObject*)));

//slot
void MyWidget::slotProgressChanged(vtkObject* obj)
{
    vtkDICOMImageReader *r = vtkDICOMImageReader::SafeDownCast(obj);
    std::cout << "-- Progress: " << r->GetProgress() << endl;
    std::cout << "-- Progress text: " << r->GetProgressText() << endl;
}

Thnks in advance,

Wagner Sales


		
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