<div dir="ltr">That won't work. There aren't any observers registered with the interactor style. The style does register observers with the interactor which you theoretically selectively remove, but I wouldn't recommend that.<div><br></div><div>Instead, you can subclass vtkInteractorStyleImage and override the OnMouseMove() member function to avoid the change in color level.</div><div><br></div><div>Thanks,</div><div>Cory</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Dec 10, 2015 at 3:53 AM, 时光 <span dir="ltr"><<a href="mailto:yihui.cao@qq.com" target="_blank">yihui.cao@qq.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<div><br></div><div>When I show an image used vtkInteractorStyleImage, l<span style="font-family:'lucida Grande',Verdana,'Microsoft YaHei';line-height:23.8px">eft button down and move, the ColorLevel of image will changing. I want to turn off the observer of </span><font face="lucida Grande, Verdana, Microsoft YaHei"><span style="line-height:23.8px">"MouseMoveEvent" and write the follow code. But it do not work. So anyone can tell me how to turn off the observer or turn off this function.</span></font></div><div><font face="lucida Grande, Verdana, Microsoft YaHei"><span style="line-height:23.8px"><br></span></font></div><div><font face="lucida Grande, Verdana, Microsoft YaHei"><span style="line-height:23.8px">cpp code:</span></font></div><div><font face="lucida Grande, Verdana, Microsoft YaHei"><span style="line-height:23.8px"><div><span style="white-space:pre-wrap">  </span>vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =</div><div><span style="white-space:pre-wrap">                </span>vtkSmartPointer<vtkRenderWindowInteractor>::New();</div><div><span style="white-space:pre-wrap"> </span>vtkSmartPointer<vtkInteractorStyleImage> imagestyle =</div><div><span style="white-space:pre-wrap">              </span>vtkSmartPointer<vtkInteractorStyleImage>::New();</div><div><br></div><div><span style="white-space:pre-wrap">  </span>imagestyle->RemoveObservers(vtkCommand::MouseMoveEvent);</div><div><span style="white-space:pre-wrap">      </span>//imagestyle->RemoveAllObservers();</div><div><br></div><div><span style="white-space:pre-wrap">  </span>renderWindowInteractor->SetInteractorStyle(imagestyle);</div><div><span style="white-space:pre-wrap">       </span>renderWindowInteractor->SetRenderWindow(renderWindow);</div><div><span style="white-space:pre-wrap">        </span>renderWindowInteractor->Initialize();</div><div><span style="white-space:pre-wrap"> </span>renderWindowInteractor->Start();</div><div><br></div><div>Thanks,</div><div>Yihui Cao</div></span></font></div><br>_______________________________________________<br>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature">Cory Quammen<br>R&D Engineer<br>Kitware, Inc.</div>
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