R help - Apr 2003 - iwidgets in tcltk in R 1.7.0

Hi,

I have successfully installed R 1.7.0 and ActiveTcl 8.4.2.0 in 
Windows 2000.  Yes, I know that Tcl is already bundled with 
R 1.7.0, but I want to use the iwidgets package to create a 
drop-down listbox, and I don't think iwidgets is included in the 
bundled R 1.7.0/TclTk installation package.  I have set the 
environment variables TCL_LIBRARY and MY_TCLTK to the directory 
where I installed ActiveTcl and I have added the Tcl\bin 
directory containing the DLLs to my PATH environment variable.  
I can load the tcltk package with library(tcltk) and use all of 
the standard widgets, but tclRequire("iwidgets") fails :
> tclRequire("iwidgets")
Error in structure(.External("dotTcl", ..., PACKAGE =
"tcltk"),
class = "tclObj") : 
        [tcl] can't find package iwidgets.

Any suggestions would be greatly appreciated.

Thanks,
James


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James Wettenhall                                  Tel: (+61 3) 9345 2629
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Thanks Peter,

Yes, the capitalization was the problem.  My code previously 
used tclRequire("iwidgets") which worked OK in R 1.6.x on 
Windows but now I have changed it to tclRequire("Iwidgets") 
which has solved the problem!

Regards,
James

On 23 Apr 2003, Peter Dalgaard BSA wrote:
> > library(tcltk)
> > tclRequire("iwidgets")
> > Error in structure(.External("dotTcl", ..., PACKAGE =
"tcltk"),
> > class = "tclObj") : 
> >         [tcl] can't find package iwidgets.
> > 
> > Any suggestions would be greatly appreciated.
> 
> Check the capitalization. I suspect it is "Iwidgets" (it is on
Unix,
> but the namespace is "iwidgets"...)