<div dir="ltr">Here is the working code<br><br>import sys<br>from PyQt4 import QtCore, QtGui<br>from PyQt4.QtGui import *<br>from vtk.qt4.QVTKRenderWindowInteractor import QVTKRenderWindowInteractor<br>import vtk<br><br>class MainWindow(QtGui.QMainWindow):<br>
    def __init__(self, parent = None):<br>        super(MainWindow, self).__init__(parent)<br>        self.initUI()<br><br>    def initUI(self):<br>       widget = QVTKRenderWindowInteractor()<br>       widget.Initialize()<br>
       widget.Start()<br>##       widget.AddObserver(&quot;ExitEvent&quot;, lambda o, e, a=app: a.quit())<br><br>       ren = vtk.vtkRenderer()<br>       widget.GetRenderWindow().AddRenderer(ren)<br><br>       cone = vtk.vtkConeSource()<br>
       cone.SetResolution(24)<br><br>       coneMapper = vtk.vtkPolyDataMapper()<br>       coneMapper.SetInput(cone.GetOutput())<br><br>       coneActor = vtk.vtkActor()<br>       coneActor.SetMapper(coneMapper)<br>       ren.AddActor(coneActor)<br>
       widget.show()<br><br>       <br><br>if __name__ == &quot;__main__&quot;:<br>    app=QApplication(sys.argv)<br>    form=MainWindow()<br>    app.exec_()<br><br>Jothy<br><br><div class="gmail_quote">On Mon, Nov 28, 2011 at 3:33 PM, chasank <span dir="ltr">&lt;<a href="mailto:chasank@gmail.com">chasank@gmail.com</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">What&#39;s the wrong with below script? It just shows a blank window, where is<br>
the interactor window?<br>
Can anyone help me?<br>
<br>
import sys<br>
from Nifti import Nifti<br>
from PyQt4 import QtCore, QtGui<br>
from PyQt4.QtGui import *<br>
from vtk.qt4.QVTKRenderWindowInteractor import QVTKRenderWindowInteractor<br>
import vtk<br>
<br>
class MainWindow(QtGui.QMainWindow):<br>
<br>
  def __init__(self, parent = None):<br>
    super(MainWindow, self).__init__(parent)<br>
    self.initUI()<br>
<br>
  def initUI(self):<br>
<br>
    widget = QVTKRenderWindowInteractor(self)<br>
    widget.Initialize()<br>
    widget.Start()<br>
    widget.AddObserver(&quot;ExitEvent&quot;, lambda o, e, a=app: a.quit())<br>
<br>
    ren = vtk.vtkRenderer()<br>
    widget.GetRenderWindow().AddRenderer(ren)<br>
<br>
    cone = vtk.vtkConeSource()<br>
    cone.SetResolution(24)<br>
<br>
    coneMapper = vtk.vtkPolyDataMapper()<br>
    coneMapper.SetInput(cone.GetOutput())<br>
<br>
    coneActor = vtk.vtkActor()<br>
    coneActor.SetMapper(coneMapper)<br>
    ren.AddActor(coneActor)<br>
    widget.show()<br>
<br>
    layout = QVBoxLayout()<br>
    layout.addWidget(widget)<br>
<br>
    central = QWidget()<br>
    central.setLayout(layout)<br>
<br>
    self.setCentralWidget(central)<br>
    self.setWindowTitle(&#39;Example&#39;)<br>
    self.show()<br>
<span class="HOEnZb"><font color="#888888"><br>
<br>
--<br>
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</font></span><div class="HOEnZb"><div class="h5">Sent from the VTK - Users mailing list archive at Nabble.com.<br>
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</div></div></blockquote></div><br><br clear="all"><br>-- <br><div dir="ltr">Jothy<br></div><br>
</div>