installr (version 0.15.3)

ask.user.yn.question: Asks the user for one yes/no question.

Description

Asks the user for one yes/no question. If the users replies with a "yes" (or Y, or y) the function returns TRUE. Otherwise, FALSE. (also exists as the function devtools::yesno)

Usage

ask.user.yn.question(question, use_GUI = TRUE, add_lines_before = TRUE)

Arguments

question

a character string with a question to the user.

use_GUI

a logical indicating whether a graphics menu should be used if available. If TRUE, and on Windows, it will use winDialog, otherwise it will use menu.

add_lines_before

if to add a line before asking the question. Default is TRUE.

Value

• TRUE/FALSE - if the user answeres yes or no.

References

http://stackoverflow.com/questions/15250487/how-to-add-a-menu-item-to-rgui (my thanks goes to Dason for his answer and help)

See Also

menu, (yesno in the package {devtools})

Examples

ask.user.yn.question("Do you love R?")
ask.user.yn.question(question = "Do you love R?", use_GUI = TRUE) # the same one as before
ask.user.yn.question(question = "Do you love R?", use_GUI = FALSE)
# reverts to command line questions

ask.user.yn.question("Lorem ipsum dolor sit amet, consectetur adipisicing elit,
sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation

  ullamco laboris nisi ut aliquip
  ex ea commodo consequat. Do \n you \n love R?")
   # checking how it deals with multi lines, and a lot of text (very good actually)