[vtkusers] SetProgressMethod

[Marcel van Straten]

Hi all,

I'm trying to use SetProgressMethod in C++ to show the progress of a filter.
I implemented it this way:

////////////////////////////////////////////////////////////////////////////
////////////////////////
// Progress monitoring
////////////////////////////////////////////////////////////////////////////
////////////////////////
void qvChamferCostFunction::Progress(void *arg) {
 vtkImageThreshold *thresh = (vtkImageThreshold *)arg;
   cout << "Progress: " << thresh->GetProgress() << "\n";

}

...
qvChamferCostFunction::qvChamferCostFunction(QWidget *parent, const char
*name):QVBox (parent, name)
{
...

this->thresh1->GetImageThreshold()->SetProgressMethod(this->Progress,this->t
hresh1);
...
}

When compiling (MS VC++) I get the following error:
error C2664: 'SetProgressMethod' : cannot convert parameter 1 from 'void
(void *)' to 'void (__cdecl *)(void *)'
        None of the functions with this name in scope match the target type

If you know what's wrong, please help me,

thanks in advance,
Marcel