[R-gui] Example using 'after'

[Paul Roebuck]

On Fri, 10 Oct 2008, Peter Dalgaard wrote:

> Paul Roebuck wrote:
> > Does this work when using tcltk package?
> >
> > I tried the minimalist
> >     tcl("after idle bell")
> >
> > but it just gives an error.
> >
> > Does someone have an example?
> >
> tcl("after", "idle", "bell")
>
> or
>
> .Tcl("after idle bell")
>
> (which starts with a dot because you shouldn't have to know about it....)
>

Thanks for responding. How far does this go? This was a
trivial example so I didn't expect much but there appears
to be little support for using "after" in general. If I
have an actual procedure to call, just write the entire
code as a single string and pass it to .Tcl() method?

For instance, if one wanted to set a minimum size for a
Tk application, the Tcl code might be as follows:

after idle [format {
    update idletasks
    wm minsize %s [winfo reqwidth %s] [winfo reqheight %s]
} $top $top $top]


Also, could you (Peter) clarify whether the environment
created with each Tk widget should be considered "private"?
In other words, is storing widget-specific user data
within its environment user-supported functionality?

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