Thanks Peter, I've started a new R session (in Windows) and managed to get both ways working now :
### THIS WORKS !!! ### library(tcltk) tclRequire("IWidgets") tt<-tktoplevel() combo <- tkwidget(tt,"iwidgets::combobox") tkpack(combo) ### AND THIS WORKS TOO !!! ### tt<-tktoplevel() win <- .Tk.subwin(tt) .Tcl(paste("iwidgets::combobox",.Tk.ID(win),.Tcl.args())) tkpack(win) But they both fail in my old R session - maybe I've tclRequired another package or loaded another package which is interfering or maybe a Tcl object hasn't been cleaned from memory properly. Thanks very much for your help! Regards, James On 27 Mar 2003, Peter Dalgaard BSA wrote: > James Wettenhall <[EMAIL PROTECTED]> writes: > > > Hi, > > > > I am trying to create a drop-down combobox in R TclTk. > > > > The following works fine for a ListBox but fails for a combobox: > > > > ################# THIS WORKS FINE - CREATES AN EMPTY LISTBOX ## > > tt<-tktoplevel() > > win <- .Tk.subwin(tt) > > .Tcl(paste("listbox",.Tk.ID(win),.Tcl.args())) > > tkpack(win) > > > > ################## THIS FAILS - ATTEMPTS TO CREATE A COMBOBOX ## > > tt<-tktoplevel() > > win <- .Tk.subwin(tt) > > .Tcl(paste("iwidgets::combobox",.Tk.ID(win),.Tcl.args())) > > Error in structure(.External("dotTcl", ..., PACKAGE = "tcltk"), > > class = "tclObj") : > > [tcl] . > > Hmm, can't see why that shouldn't work. On Linux, this seems to work fine: > > tt<-tktoplevel() > combo <- tkwidget(tt,"iwidgets::combobox") > tkpack(combo) > > and your code seems to work as well... > > You remembered to tclRequire("Iwidgets"), I assume? > > -- -------------------------------------------------------------------------- James Wettenhall Tel: (+61 3) 9345 2629 Division of Genetics and Bioinformatics Fax: (+61 3) 9347 0852 The Walter & Eliza Hall Institute E-mail: [EMAIL PROTECTED] of Medical Research, Mobile: (+61 / 0 ) 438 527 921 1G Royal Parade, Parkville, Vic 3050, Australia http://www.wehi.edu.au -------------------------------------------------------------------------- ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help