Hi, all,
(sessionInfo at the end)
I've been struggling with the tcltk package and can't seem to get the
ttkcombobox to work. Here's an example:
library(tcltk)
p <- tktoplevel()
l <- tclVar()
## I don't know if I'm even calling it correctly
cb <- ttkcombobox(p, values = letters[1:4], textvariable = l)
tkpack(cb)
1. How do I know when the value of the combobox has been changed from,
say, "a" to "b"?
2. How can I get the value of the box? E.g. if I switch the box to "b",
how can I access this value?
3. How can I set the default value to something of my choice? I've tried
the "set" argument as described in the "Tcl/Tk 8.5 Manual" but I
received an error:
cb <- ttkcombobox(p, values = letters[1:4], textvariable = l, set = "b")
Error in structure(.External("dotTclObjv", objv, PACKAGE = "tcltk"),
class = "tclObj") :
[tcl] unknown option "-set".
Thanks,
--sundar
> sessionInfo()
R version 2.7.2 (2008-08-25)
i386-pc-mingw32
locale:
LC_COLLATE=English_United States.1252;LC_CTYPE=English_United
States.1252;LC_MONETARY=English_United
States.1252;LC_NUMERIC=C;LC_TIME=English_United States.1252
attached base packages:
[1] tcltk stats graphics grDevices utils datasets methods
[8] base
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