R help - Mar 2009 - tcltk - insert scrollbar to window

Hello, I hava a problem with inserting a scrollbar into a tcltk toplevel.
The comand is as follows:

require(tcltk)
tt<-tktoplevel()
tkgrid(tklabel(tt,text="Choose path to the meteorology file used for
CDM"))
OnOK2 <- function(){
   
wind.file<<-read.csv2(file.choose(),header=T,sep=";",dec=".")
    wind<<-as.double(wind.file[,5])
    uH<<-max(wind)
    }
OK.but2 <-tkbutton(tt,text="   Search   ",command=OnOK2) 
tkbind(tkgrid, "<Return>",OnOK2)
tkgrid(OK.but2)

Because some more tkgrids with requestions to enter other parameters shall
follow within the same window the tcltk-window is to small to show all of
them. Therefore I would need a scrollbar for the whole window. How can I
create this?

Thanks! THoeb

-----
Tamara Hoebinger
University of Vienna
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