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<META NAME="Author" CONTENT="Brent B. Welch">
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<TITLE>MH & nmh: Resources for Menus</TITLE>
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<H1>Resources for Menus</H1>
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The menus in <I>exmh</I> are defined similarly to buttons.
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Naturally, menus are a little more complex than buttons -- but
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the general idea is the same.
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There are parallel sets of resources for the two parts of menus:
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system-defined and user-defined.
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Each section has a list of menus defined
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with the <I>menulist</I> and <I>umenulist</I>.
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Each menu, in turn, has a <I>text</I> resource that defines
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the label on the menu button.
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The <I>entrylist</I> and <I>uentrylist</I> resources list
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the entries that are found under the menu.
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Again, the system-defined entries are listed under <I>entrylist</I>;
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users should add new entries to <I>uentrylist</I>.
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Each menu entry has resources with the following naming
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convention (this is not standard Tk).
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If the entrylist item is <I>foo</I>, then:
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l_<I>foo</I> defines the label (text) for the entry.
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c_<I>foo</I> defines the command.
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t_<I>foo</I> defines the type: "command", "check", "radio", "cascade", or
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v_<I>foo</I> defines the variable associated with check and radio entries.
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m_<I>foo</I> defines the menu associated with cascade entries.
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To get more information, read the Tk
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manual page for <I>menu</I>.
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Here is an example -- the definition for the <I>exmh</I> main menus:
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*Main.menulist: bind help
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*Main.bind.text: Bindings...
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*Main.bind.m.entrylist: command sedit
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*Main.bind.m.l_command: Commands
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*Main.bind.m.c_command: Bind_Pref
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*Main.bind.m.l_sedit: Simple Edit
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*Main.bind.m.c_sedit: Sedit_Pref
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*Main.help.text: Help...
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*Main.help.m.entrylist: help colorkey faq
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*Main.help.m.l_colorkey: Color Legend
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*Main.help.m.c_colorkey: Help_KeyDisplay
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*Main.help.m.l_help: Quick Intro
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*Main.help.m.c_help: Help
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*Main.help.m.l_faq: Frequently Asked Questions
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*Main.help.m.c_faq: Help FAQ
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Note the additional <TT>.m</TT> component in the
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<TT>*Main.help.m.entrylist</TT> resource name.
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The <TT>*Main.help</TT> resource corresponds to the menu button, and
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<TT>*Main.help.m</TT> corresponds to the menu associated with that button.
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Here's another example.
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the <I>uentrylist</I> resource to add a new menu entry to
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the message <TT>More...</TT> menu.
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It will be a check-button type of entry -- to set the Tcl
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variable controlling the "skip marked" behavior of <TT>Next</TT> and
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We'll also separate the user-defined entries from the
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system entries with a special separator menu entry.
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The resources in your <I>~/.exmh-defaults</I> file
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would look something like this:
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*Mops.more.m.uentrylist: sep skip
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*Mops.more.m.t_sep: separator
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*Mops.more.m.t_skip: check
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*Mops.more.m.l_skip: Skip marked messages
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*Mops.more.m.v_skip: ftoc(skipMarked)
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In this case, the Tcl variable is <I>ftoc(skipMarked)</I>,
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an element of an associative Tcl array.
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Menu entries that use Tcl variables defined by <I>exmh</I>
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might stop working in a future release.
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However, you can easily get an idea of what the important
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variables are by searching through the code for Preferences_Add
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These calls set up the relationship between the internal Tcl
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variables and the Preference items you see in the interface.
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In most cases, the variables are elements of an associative array.
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In the example above, <I>ftoc</I> is the array that holds the state variables
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for <I>ftoc.tcl</I>, which implements the table of contents.
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[<A HREF="tocs/jump.htm">Table of Contents</A>] [<A HREF="indexes/map.htm">Index</A>]
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[<A HREF="resbut.htm">Previous: Resources for Buttons</A>]
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[<A HREF="butgro.htm">Next: Button Groups</A>]
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(This section was written by Brent Welch.)<BR>
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<EM>Last change $Date: 1999/10/10 05:14:05 $</EM>
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This file is from the third edition of the book <I>MH & xmh: Email
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for Users & Programmers</I>, ISBN 1-56592-093-7, by Jerry Peek.
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Copyright © 1991, 1992, 1995 by O'Reilly & Associates, Inc.
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This file is freely available; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation. For more information, see
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<A HREF="../copying.htm">the file <I>copying.htm</I></A>.
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Suggestions are welcome:
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<A HREF="http://www.beedub.com/exmh/">Brent Welch</A>
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<A HREF="mailto:welch@acm.org"><welch@acm.org></A>
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