BOOL pascal DlgDirSelect(HDLG hDlg, char *szFname, WORD idListBox)

  This function returns the current selection in the directory
listbox. This listbox must have been created by DlgDirList(). All
formatting characters (ie - the brackets around a directory name or a
drive letter) will be removed when the selection is copied into the
user-supplied buffer.

Parameters
  hDlg is the handle of the dialog box which contains the directory listbox.
  szFname points to a user-defined buffer which will be used to store
   the path name specified by the dialog box. No size checking is
   performed, so the user must guarantee that enough space is allocated
   in szFname.
  idListBox is the identifier of the directory listbox.

Returns
  TRUE if the current selection is a directory name, FALSE if not.