<html><body><div style="color:#000; background-color:#fff; font-family:verdana, helvetica, sans-serif;font-size:10pt"><div style="font-family: verdana, helvetica, sans-serif; font-size: 10pt;">Hello all,</div><div style="font-family: verdana, helvetica, sans-serif; font-size: 10pt;"><br></div><div style="font-family: verdana, helvetica, sans-serif; font-size: 13px; color: rgb(0, 0, 0); background-color: transparent; font-style: normal;">I am trying to do some new stuff and I am again hitting the debugging barriers of vtk in python.</div><div style="font-family: verdana, helvetica, sans-serif; font-size: 13px; color: rgb(0, 0, 0); background-color: transparent; font-style: normal;"><br></div><div style="font-family: verdana, helvetica, sans-serif; font-size: 13px; color: rgb(0, 0, 0); background-color: transparent; font-style: normal;">My code:</div><div style="font-family: verdana, helvetica, sans-serif; font-size: 13px; color: rgb(0, 0, 0);
background-color: transparent; font-style: normal;"><br></div><div style="background-color: transparent;"><div style="background-color: transparent;"><font face="verdana, helvetica, sans-serif" size="2"> file = "test.mhd"</font></div><div style="background-color: transparent;"><font face="verdana, helvetica, sans-serif" size="2"><br></font></div><div style="background-color: transparent;"><font face="verdana, helvetica, sans-serif" size="2"> reader = vtk.vtkMetaImageReader()</font></div><div style="background-color: transparent;"><font face="verdana, helvetica, sans-serif" size="2"> reader.SetFileName(file)</font></div><div style="background-color: transparent;"><font face="verdana, helvetica, sans-serif" size="2"> reader.Update() #just for checking because I had an observer attached to reader</font></div><div style="background-color:
transparent;"><span style="font-family: verdana, helvetica, sans-serif; font-size: 13px; background-color: transparent;"> </span><br></div><div style="background-color: transparent;"><font face="verdana, helvetica, sans-serif" size="2"> iren = QVTKRenderWindowInteractor(self.widget)</font></div><div style="background-color: transparent;"><span style="font-family: verdana, helvetica, sans-serif; font-size: 13px; background-color: transparent;"> ren = vtk.vtkRenderer()</span><br></div><div style="background-color: transparent;"><span style="font-family: verdana, helvetica, sans-serif; font-size: 13px; background-color: transparent;"> iren.GetRenderWindow().AddRenderer(ren)</span><br></div><div style="background-color: transparent;"><span style="font-family: verdana, helvetica, sans-serif; font-size: 13px; background-color: transparent;">
</span><br></div><div style="background-color: transparent;"><font face="verdana, helvetica, sans-serif" size="2"> viewer = vtk.vtkResliceImageViewer()</font></div><div style="background-color: transparent;"><span style="font-family: verdana, helvetica, sans-serif; font-size: 13px; background-color: transparent;"> viewer.SetRenderWindow(iren.GetRenderWindow())</span><br></div><div style="background-color: transparent;"><font face="verdana, helvetica, sans-serif" size="2"> viewer.SetRenderer(ren)</font></div><div style="background-color: transparent;"><font face="verdana, helvetica, sans-serif" size="2"> viewer.SetupInteractor(iren)</font></div><div style="background-color: transparent;"><font face="verdana, helvetica, sans-serif" size="2">
viewer.SetInput(reader.GetOutput())</font></div><div style="background-color: transparent;"><font face="verdana, helvetica, sans-serif" size="2"> </font></div><div style="background-color: transparent;"><font face="verdana, helvetica, sans-serif" size="2"> viewer.SetSlice(50)</font></div><div style="background-color: transparent;"><font face="verdana, helvetica, sans-serif" size="2"> viewer.SetColorWindow(2000.0)</font></div><div style="background-color: transparent;"><font face="verdana, helvetica, sans-serif" size="2"> viewer.SetColorLevel(1000.0)</font></div><div style="background-color: transparent;"><font face="verdana, helvetica, sans-serif" size="2"> </font></div><div style="background-color: transparent;"><span style="font-family: verdana, helvetica, sans-serif; font-size: 13px; background-color:
transparent;"> layout = QtGui.QVBoxLayout()</span><br></div><div style="background-color: transparent;"><font face="verdana, helvetica, sans-serif" size="2"> layout.addWidget(iren)</font></div><div style="background-color: transparent;"><font face="verdana, helvetica, sans-serif" size="2"> </font></div><div style="background-color: transparent;"><font face="verdana, helvetica, sans-serif" size="2"> self.slider = QtGui.QSlider(Qt.Horizontal, self.widget)</font></div><div style="background-color: transparent;"><font face="verdana, helvetica, sans-serif" size="2"> layout.addWidget(self.slider)</font></div><div style="background-color: transparent;"><font face="verdana, helvetica, sans-serif" size="2"> </font></div><div style="background-color: transparent;"><font face="verdana,
helvetica, sans-serif" size="2"> self.widget.setLayout(layout)</font></div><div style="background-color: transparent;"><font face="verdana, helvetica, sans-serif" size="2"> </font></div><div style="background-color: transparent;"><font face="verdana, helvetica, sans-serif" size="2"> iren.Initialize()</font></div><div style="background-color: transparent;"><font face="verdana, helvetica, sans-serif" size="2"> iren.Start()</font></div><div style="background-color: transparent; color: rgb(0, 0, 0); font-size: 13px; font-family: verdana, helvetica, sans-serif; font-style: normal;"><font face="verdana, helvetica, sans-serif" size="2"><br></font></div><div style="background-color: transparent; color: rgb(0, 0, 0); font-size: 13px; font-family: verdana, helvetica, sans-serif; font-style: normal;"><font face="verdana, helvetica, sans-serif"
size="2">I can see the image in the first place.</font></div><div style="background-color: transparent; color: rgb(0, 0, 0); font-size: 13px; font-family: verdana, helvetica, sans-serif; font-style: normal;"><font face="verdana, helvetica, sans-serif" size="2">When I use the right mouse button everything is fine and I can zoom in and out but when using the left mouse button the app suddenly freezes and the debugging window of Win7 appears - not the VTK window. It is sth. with a malloc at least this is what the debugger told me or rather stepped in.</font></div><div style="background-color: transparent; color: rgb(0, 0, 0); font-size: 13px; font-family: verdana, helvetica, sans-serif; font-style: normal;"><font face="verdana, helvetica, sans-serif" size="2">I tried using the Error Observer suggested by David and mined every object I've access to. I also used the vtk.vtkFileOutputWindow() without any success. No file was written.</font></div><div
style="background-color: transparent; color: rgb(0, 0, 0); font-size: 13px; font-family: verdana, helvetica, sans-serif; font-style: normal;"><font face="verdana, helvetica, sans-serif" size="2">(The slider isn't currently attached to any object so you can ignore it.) Am I doing sth. wrong with the initialization?</font></div><div style="background-color: transparent; color: rgb(0, 0, 0); font-size: 13px; font-family: verdana, helvetica, sans-serif; font-style: normal;"><font face="verdana, helvetica, sans-serif" size="2"><br></font></div><div style="background-color: transparent; color: rgb(0, 0, 0); font-size: 13px; font-family: verdana, helvetica, sans-serif; font-style: normal;"><font face="verdana, helvetica, sans-serif" size="2">Can someone help me with this?</font></div><div style="background-color: transparent; color: rgb(0, 0, 0); font-size: 13px; font-family: verdana, helvetica, sans-serif; font-style: normal;"><font face="verdana, helvetica,
sans-serif" size="2"><br></font></div><div style="background-color: transparent; color: rgb(0, 0, 0); font-size: 13px; font-family: verdana, helvetica, sans-serif; font-style: normal;"><font face="verdana, helvetica, sans-serif" size="2">Cheers,</font></div><div style="background-color: transparent; color: rgb(0, 0, 0); font-size: 13px; font-family: verdana, helvetica, sans-serif; font-style: normal;"><font face="verdana, helvetica, sans-serif" size="2">Willi</font></div></div></div></body></html>