What exactly you want to implement with the callback function?<br><br><div class="gmail_quote">On Sat, Mar 10, 2012 at 5:07 PM, Khan <span dir="ltr"><<a href="mailto:hammadtahirkhan@hotmail.com">hammadtahirkhan@hotmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
I have a problem with callback function I have added observer for :<br>
<br>
vtkCommand::LeftButtonPressEvent<br>
vtkCommand::LeftButtonReleaseEvent<br>
vtkCommand::MouseMoveEvent<br>
<br>
if it is once called for *LeftButtonPressEvent* it is not called again<br>
I also *intitialize * and *start * my interactor after<br>
*LeftButtonPressEvent*<br>
if I do not *intitialize * and *start * my callback function is called<br>
again and again but I can not move my objects in widget.<br>
<br>
kindly help me in this regard.<br>
<br>
--<br>
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</blockquote></div><br>