/usr/lib/blt2.4/dd_protocols/dd-text.tcl is in blt 2.4z-4.2ubuntu1.
This file is owned by root:root, with mode 0o644.
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# PURPOSE: drag&drop send routine for "text" data
#
# Widgets that are to participate in drag&drop operations for
# "text" data should be registered as follows:
#
# drag&drop .win source handler text dd_send_text
# drag&drop .win target handler text my_text_handler
#
# proc my_text_handler {} {
# global DragDrop
#
# set data $DragDrop(text)
# .
# . do something with $data
# .
# }
#
# AUTHOR: Michael J. McLennan Phone: (215)770-2842
# AT&T Bell Laboratories E-mail: aluxpo!mmc@att.com
#
# SCCS: %W% (%G%)
# ----------------------------------------------------------------------
# Copyright (c) 1993 AT&T All Rights Reserved
# ======================================================================
# ----------------------------------------------------------------------
# COMMAND: dd_send_text <interp> <ddwin> <data>
#
# INPUTS
# <interp> = interpreter for target application
# <ddwin> = pathname for target drag&drop window
# <data> = data returned from -tokencmd
#
# RETURNS
# ""
#
# SIDE-EFFECTS
# Sends data to remote application DragDrop(text), and then
# invokes the "text" handler for the drag&drop target.
# ----------------------------------------------------------------------
proc dd_send_text {interp ddwin data} {
send $interp "
global DragDrop
set DragDrop(text) [list $data]
"
send $interp "drag&drop target $ddwin handle text"
}
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