R help - Apr 2003 - Help with TCL packages

Hello,

I am exploring the TCLTK package under R and try to load and use additional TCL
libraries (under Windows, with TCL8.3). For example :
> addTclPath("C:/TCL/lib/bwidget1.5")
> tclRequire("BWidget")
<Tcl> 1.5

Loading seems to work, but when I try to create a specific widget :

# The main window appears correctly
> top=tktoplevel()
# Trying to insert a combobox
> combo <- tkwidget(top,"BWidget::combobox")
Error in structure(.External("dotTcl", ..., PACKAGE =
"tcltk"), class = "tclObj") :
        [tcl] invalid command name "BWidget::combobox".

The file combobox.tcl is present in the BWidget directory.

I wonder what I'm doing wrong. Any idea ?

Yvonnick NOEL

"Yvonnick Noel" <ynoel at tele2.fr> writes:
> Hello,
> 
> I am exploring the TCLTK package under R and try to load and use additional
TCL libraries (under Windows, with TCL8.3). For example :
> 
> > addTclPath("C:/TCL/lib/bwidget1.5")
> > tclRequire("BWidget")
> <Tcl> 1.5
> 
> Loading seems to work, but when I try to create a specific widget :
> 
> # The main window appears correctly
> > top=tktoplevel()
> 
> # Trying to insert a combobox
> > combo <- tkwidget(top,"BWidget::combobox")
> Error in structure(.External("dotTcl", ..., PACKAGE =
"tcltk"), class = "tclObj") :
>         [tcl] invalid command name "BWidget::combobox".
> 
> The file combobox.tcl is present in the BWidget directory.
> 
> I wonder what I'm doing wrong. Any idea ?
I haven't got BWidgets around, but it seems that it likes to use
MacCapitalizationStyle, so shouldn't it be BWidget::ComboBox ?? 

In general, you might want to try things out in the "wish" interpreter
since R interfaces to an embedded Tcl interpreter and you're seeing
its error messages.

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