Dear Daniel,
Try
tkbind(table1, "<Button-1>", function(){
res <- try(tclvalue(tkindex(table1, "active")), silent=TRUE)
if (inherits(res, "try-error")) print (NULL)
else print(res)
})
I put in the calls to print() so that you could see how it works.
I hope this helps,
John
-----------------------------
John Fox, Professor
McMaster University
Hamilton, Ontario
Canada L8S 4M4
Web: socserv.mcmaster.ca/jfox
> -----Original Message-----
> From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Dalthorp,
> Daniel
> Sent: April 29, 2016 1:42 PM
> To: r-help@R-project.org (r-help@r-project.org) <r-help@r-project.org>
> Subject: [R] tcltk: click and return table cell index
>
> I'm struggling mightily with what should be a simple task...when a user clicks
> on a cell in a tcltk table widget, I need to know which cell was clicked.
>
> One idea that gives a cryptic error:
> tkbind(table1, "<Button-1>", function(x, y){
> tcl(table1, "index", x, y)
> }
>
> # x, y give pixel coordinates; "index" should give cell coordinates, but
> format
> must be correct
>
> I get an error message:
>
> wrong # args: should be ".25.1 index <index> ?row|col?".
>
> To which I respond, "Yes, I know I have the format wrong, but how can I make
> sense of THAT?"
>
> Does anyone know a simple fix?
>
> Much appreciated!
>
> -Dan
>
> --
> Dan Dalthorp, PhD
> USGS Forest and Rangeland Ecosystem Science Center Forest Sciences Lab, Rm
> 189
> 3200 SW Jefferson Way
> Corvallis, OR 97331
> ph: 541-750-0953
> ddalth...@usgs.gov
>
> [[alternative HTML version deleted]]
>
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