[R] R TclTk iwidgets::combobox

[James Wettenhall]

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 <wettenhall at wehi.edu.au> 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?
> 
> 

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James Wettenhall                                  Tel: (+61 3) 9345 2629
Division of Genetics and Bioinformatics           Fax: (+61 3) 9347 0852
The Walter & Eliza Hall Institute         E-mail: wettenhall at wehi.edu.au
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