installr (version 0.17.8)

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, GUI = TRUE, add_lines_before = TRUE)

Arguments

question

a character string with a question to the user.

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

## Not run: 
# ask.user.yn.question("Do you love R?")
# ask.user.yn.question(question = "Do you love R?", GUI = TRUE) # the same one as before
# ask.user.yn.question(question = "Do you love R?", 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)
#   
# ## End(Not run)