[vtkusers] Vector arrows form a solid patch. How to rectify??

[Rakesh Patil]

Oopss.... Thats a big word for me.. How do i add observer..?? Wat is obeserver.?? I went through google, it is a design pattern.. But how do i implement it.?? These r real difficult concepts.. It will be grateful If u could help me with an example..?? ThanksGet Yourself a cool, short @in.com Email ID now!
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