Usage
tk.file(title = "Choose a file", typeNames = "All files", typeExt = "*",
multiple = FALSE, mandatory = TRUE, type = c("open", "save"), initialdir = NULL,
parent = NULL)
tk.files(preselection = character(0), multiple = TRUE, parent = NULL, ...)
tk.folder(title = "Choose a directory", mustexist = TRUE, mandatory = TRUE)
handle(expr, messageHandler, warningHandler, errorHandler)Arguments
title
Single character value, the displayed name of the summoned window.
typeNames
Character vector defining the displayed names of the filtered file extensions. Parallel to typeExt.
typeExt
Character vector defining the filtered file extensions (use "*" as wildcard). Parallel to typeNames.
multiple
Single logical value, whether to allow multiple file selection or not.
mandatory
Single logical value, whether to throw an error if no file is selected or not.
type
Single character value defining the label of the button.
initialdir
Single character value, the initially selected directory when the window is summoned. NULL corresponds to the last directory browsed via one of these functions.
parent
A Tcl-Tk object to consider as the parent of the new frame.
preselection
Character vector, the files already selected when the window is summoned.
…
Further arguments to be passed to tk.file.
mustexist
Single logical value, whether to throw an error if a non-existing directory is selected or not.
expr
An R expression in which errors, warnings and messages are to be caught. Use {} to monitor a multi-line R code.
messageHandler
A function taking as single argument the condition object caught. If missing, messages will pass through.
warningHandler
A function taking as single argument the condition object caught. If missing, warnings will pass through.
errorHandler
A function taking as single argument the condition object caught. If missing, errors will pass through.