Yes, Peter's suggestion worked just right.
Here's an example that prints out the proposed cell content and will not
allow 'w' or '\n' to be entered into the table:
require(tcltk2)
tt<-tktoplevel(); tfr<-tkframe(tt); tkgrid(tfr)
tableData<-tclArray()
valChar<-function(S){
print(S);
Hi Dan
Were you able to find a way to access the % S values ??
Do you have any examples of how this works?
Thank you for your attention.
Cleber
Em 25/01/2016 08:21, peter dalgaard escreveu:
> It's been so long that I have forgotten how to get the package with the table
> widget installed on
It's been so long that I have forgotten how to get the package with the table
widget installed on OSX, so I cannot check things for you. However, the
canonical way to handle %S type arguments is to pass them as formal arguments
to the callback, e.g.
> .Tcl.callback(function(x,y)x+y)
[1]
I'd like to allow users to edit data in tcltk tables and to use vcmd to
validate data entry, e.g., not allowing non-numbers to be entered in
numeric cells and not allowing '\n' to be entered in text cells.
The problem is that I can't figure out how to "see" their data entry before
it is entered,
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