I have a problem in rendering .

["aa" <zllist@xxxxxxx>]

everybody:
     In my programe, I want to render a volume, but the volume data is too big 
and the render speed is very slowly. So I must handle the mouse event on time 
during rendering, that means during the rendering, when user press the mouse on 
the SoRenderArea, the application must stop rendering and to handle the mouse 
event.I find there is a function in SoXtExaminerViewer ,named of 
setAbortCallback() maybe can help me to do it, but I don't know how to use it 
in programeing. anyone can help me ? or maybe there is a another way can do 
this work.

                                                       thanks 
                                                               zhaol.