Hi Omega,
need not to apology. perhaps it was my foult that i could not explain the problem meaningfully. somedays ago i suddenly realised that i hv some problem with my rendering as u told me before. as for me, it is not neccessary to implement the same code that i hv shown to u. i just want picking. no matter what method that will be. and about the atribute editor, it is nothing but a dialog box, which i am using as attribute editor to transform the primitives. just becouse i can't pick the primitives one by one thats why when i change the value of x axis(say +5), every primitives move together. right now forget about everything. just thing about picking. can u give me some code that works with win32 application that i hv shown u above. if u can kindly forward to me, anyway, thanks for helping me.

regards,
my email: isoprog@gmail.com