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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Hi
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">I updated my vtk from Paraview’s vtk of paraview 4.4 to 5.2 where now the opengl2 backend is enabled by default. I programmed an own app which uses qvtkwidget2 to visualize a histogram
of an image which worked on my old paraview4.4’s vtk. Now I get the error message “Error: no override found for 'vtkContextDevice2D'”. I found some threads which say that you have to link vtkRenderingContextOpenGL, but on opengl this file is called vtkRenderingContextOpenGL2
and I am already linking it… </span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> </span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">Any suggestions?</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">------------------------------------------------------------------------------------</span></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Gerald Lodron</span></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Calibri","sans-serif""> </span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:gray">Researcher of Machine Vision Applications Group</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:gray">DIGITAL - Institute for Information and Communication Technologies</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Calibri","sans-serif";color:gray">JOANNEUM RESEARCH Forschungsgesellschaft mbH</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Calibri","sans-serif";color:gray">Steyrergasse 17, 8010 Graz, AUSTRIA</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Calibri","sans-serif";color:gray">phone: +43-316-876-1751 </span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Calibri","sans-serif";color:gray">general fax: +43-316-876-1751</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Calibri","sans-serif";color:gray">web:
<a href="http://www.joanneum.at/digital">http://www.joanneum.at/digital</a></span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Calibri","sans-serif";color:gray">e-mail:
<a href="mailto:gerald.lodron@joanneum.at">gerald.lodron@joanneum.at</a></span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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