Text labels can easily be added to a toplevel window using the
ttklable() functions in tcltk, or the
tk2label() function in tcltk2. It is not necessary to assign the result of
tklabel() to a variable unless you want to change the text later on.
The following code illustrates how the text in a label can be linked to a variable:
Running the R code above gives the following window:
Pressing the “Change text label” button, gives the following window: