[vtkusers] About vtkRenderWindowInteractor.

[=?gb2312?q?=FFffffc3=FFffffcf=FFffffe7=FFffffe2=20=FFffffd0=FFffffbb?=]

Hi,
   There are multiple renderers in a single rendering
window.I add a callback for vtkRenderWindowInteractor.

   vtkRenderWindowInteractor *iren =
vtkRenderWindowInteractor::New();
   iren->AddObserver(vtkCommand::MouseMoveEvent,mo1);

But this callback only occur in a particular
renderer.Why do the thing happen?If I want that the
callback can occur in every renderer,what should I do? 

_________________________________________________________
Do You Yahoo!? 
惠普TT游戏剧，玩游戏，中大奖！
http://cn.rd.yahoo.com/mail_cn/tag/SIG=1402c0to2/**http%3A%2F%2Fhp.allyes.com%2Flaserjet%2Fgamestory%2Findex.html%3Fjumpid%3Dex_hphqapcn_MongooseLJ1010%2F201073CN407016%2FYahoo