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Put up a Windows dialog box to communicate with the user. There are various types, either for the user to select from a set of buttons or to edit a string.
winDialog(type = c("ok", "okcancel", "yesno", "yesnocancel"),
message)winDialogString(message, default)
character. The type of dialog box. It will have the buttons implied by its name.
character. The information field of the dialog box. Limited to 255 chars (by Windows, checked by R).
character. The default string.
For winDialog a character string giving the name of the button
pressed (in capitals) or NULL (invisibly) if the user had no
choice.
For winDialogString a string giving the contents of the text
box when Ok was pressed, or NULL if Cancel was pressed.
winMenuAdd
file.choose to select a file
package windlgs in the package source distribution for ways to
program dialogs in C in the GraphApp toolkit.
winDialog("yesno", "Is it OK to delete file blah")
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