[R] Tcl/Tk window lingering too long

[Peter Dalgaard BSA]

David Firth <david.firth at nuffield.oxford.ac.uk> writes:

> I want to set up a simple Tk dialog interface to a function in R, such
> that when the "OK" button is pressed, the dialog window is destroyed
> and then R does its work on the data/parameters/whatever that were
> entered in the dialog.  The function "test" below is a simple
> prototype.
> 
> My problem: upon running test() and hitting "OK", R does its work (ie,
> computes rnorm(400000) in the silly example below), and only *after*
> that does the dialog window disappear.  Is there some way to make sure
> that the window disappears immediately after hitting "OK"?
> 
> I am using R and Tcl/Tk under Darwin/X11.  Exact version information
> below.  I have made similar dialogs before with a Windows version and
> my recollection is that I didn't have this problem -- is it perhaps a
> system-dependent thing?
> 
> Any hints would be welcomed.

Hmm... I wonder if we're not missing a way to force a run of the Tcl
event loop, but the canonical way would be (I think) to make the
button callback destroy the window and use tkwait.window(base) rather
than tkwait.variable().

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)             FAX: (+45) 35327907
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