I searched the web and the list archives for a solution to this, but
didn't see anything, so here goes. I'm new to tcltk. I'm trying to
change the contents of a tkentry widget when a button is pressed. Once I
get that working, the widget will be read only to the user. Here is some
toy code:
###############
require(tcltk)
thisEnv=environment()
tt<-tktoplevel()
Name <- tclVar("Anonymous")
entry.Name <-tkentry(tt,width="20",textvariable=Name)
tkgrid(entry.Name)
OnChange <- function()
{
assign("Name",tclVar("changed name"),thisEnv)
}
Change.but <-tkbutton(tt,text=" Change ",command=OnChange)
tkgrid(Change.but)
tkfocus(tt)
##################
(much of this is taken from
http://bioinf.wehi.edu.au/~wettenhall/RTclTkExamples/editboxes.html)
Now, I thought the whole point of the textvariable argument was to
change the content of the tkentry widget. But, as you can see by running
this code, changing the Name variable using assign does not change the
content of the widget.
Is there a function to update the content? tkinsert didn't seem to work
when I tried it.
Thanks,
Richard Morey
______________________________________________
R-devel@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-devel
