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<div class=Section1><pre><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Hello All, <o:p></o:p></span></font></pre><pre><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></font></pre><pre><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>I am a little confused using vtk’s AddObserver feature in C++. Most of the existing examples are in TCL where it is very easy to simply pass a procedure that gets called on an event. In C++, to add an observer a class needs to be first derived from vtkCommand and then the execute method must be overwritten. Within my Execute method how can I get pointers to multiple objects such as the vtkRenderer, vtkInteractor, or vtkCellPicker? VTK mouse picking article in Wikipedia, uses picker, </span></font>iren and ren1 (3 object pointers) in procedure cbLBR(). While, in C++ my <font
face=Arial><span style='font-family:Arial'>vtkCommand derived class gets one vtkObject*. I hope I have been clear in explaining my problem. I do obviously not understand something simple here. Can someone please comment and guide me to C++ examples that demonstrate. Further, the wikipedia article mentioned that the C++ example is also available. Where can I get access to it? Many thanks.</span></font><o:p></o:p></pre>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>-Cheers,<o:p></o:p></span></font></p>
<p class=MsoNormal><strong><b><font size=1 face="Arial Baltic"><span
style='font-size:7.5pt;font-family:"Arial Baltic"'>Abhishek </span></font></b></strong><o:p></o:p></p>
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12.0pt'><o:p> </o:p></span></font></p>
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