Add a popup text box within an R script using tcltk

Question

I have a long-ish script to do some data analysis, and it has to connect to several databases. One of the databases tends to update my password more frequently than I like,

Answer 1

You answered your own question: you do in fact need <<- in these tcltk examples---see the various posts by Peter over the years, or other examples floating around, other CRAN packages using, or even in the package itself. Try

  library(tcltk)
  demo("tkcanvas")

and see how it treats e.g. lastX, lastY.