Rapidly construct standard dialog boxes for your GUI, including message boxes, input boxes, list, file or dir selection, ... In case R cannot display GUI dialog boxes, a simpler command line version of these interactive elements is also provided as fallback solution.
dlg_message() display a message box,
dlg_input() prompt for textual input,
dlg_list() select one or more items in a list,
dlg_open() open one or more existing file(s),
dlg_save() prompt for a file to save to (and ask confirmation if the file
dlg_dir() select a directory,
dlg_form() display a complex dialog box with textual areas, password,
checkboxes, comboboxes, font and size, color, etc.
Under Linux, you should install 'yad' (preferably), or
'zenity'. If you use 'zenity', you cannot build more complex
dialog boxes, and some versions trigger a warning like: "Gtk-Message:
GtkDialog mapped without a transient parent. This is discouraged." You do not
get these inconveniences if you use 'yad' (default choice in case both
programs are installed simultaneously).
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