;;dos_getfilem
Displays a resizable Windows common file open dialog box that allows for multiple file selection.
Syntax
(dos_getfilem title path filter)
Parameters
title
A string containing the dialog box title.
path
A string identifying an existing directory.
filter
A filename filter string. The filter string consists of two components: a description (for example, "Text Files"), and a filter pattern (for example, "*.TXT"). Multiple filter patterns can be specified for a single item by separating the filter-pattern strings with a semicolon (for example, "*.TXT;*.DOC;*.BAK"). The components must be separated by a pipe character ("|"). The filename filter string can consist of one or more filter strings, each separated by a pipe character ("|"). The entire string must be terminated with two pipe characters ("||").
Returns
A list of filenames if successful. The first element of the list is a qualified path to the selected directory.