[R] Running tcltk From a batch file

2007-09-19 Thread Samuel Kemp 
Hi,

I am trying to run some simple tktcl code

## in a file called test.R
require(tcltk)
tt - tktoplevel()
OK.but - tkbutton(tt,text=OK,command=function()tkdestroy(tt))
tkgrid(OK.but)
tkfocus(tt)

Using a batch file with the command

Rterm  test.R  testOutput.Rout --slave

The GUI pops up but then disappears. The results in the test.Output.Routfile are

 # Load the tcltk package
 require(tcltk)
Loading required package: tcltk
[1] TRUE

 # Create a new toplevel window
 tt - tktoplevel()

 # Create a button whose function (command) is to destroy the window
 OK.but - tkbutton(tt,text=OK,command=function()tkdestroy(tt))

 # Place the button on the window, using the grid manager.
 tkgrid(OK.but)
Tcl
 tkfocus(tt)
Tcl


Does anyone know how to make the GUI stay open?

Kind regards,

Sam

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Re: [R] Running tcltk From a batch file

2007-09-19 Thread Peter Dalgaard 
Jonne Zutt wrote:
 Hi Samuel,

 An easy solution is the following. Let the R script wait until a certain
 variable (ok_to_quit) got changed.

 Hope it helps,
 Jonne.

 ## in a file called test.R
 quit - function() {
   .Tcl(set ok_to_quit 1)
   tkdestroy(tt)
 }

 require(tcltk)
 tt - tktoplevel()
 OK.but - tkbutton(tt,text=OK,command=quit)
 tkgrid(OK.but)
 tkfocus(tt)

 .Tcl(set ok_to_quit 0)
 .Tcl(vwait ok_to_quit)

   
The tkttest demo does this in a somewhat cleaner fashion (avoiding .Tcl).

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