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Re: Mixing Toolbox Menu objects with Wimp sub menus

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In message <3870129f-889e-4871-9647-1a9d61625548@x26g2000prf.googlegro 
ups.com>
          wpb <w.blatchley@yahoo.com> wrote:

> I'm trying to integrate a non-Toolbox submenu onto a Toolbox Menu
> object. This is what I have so far:

> 1) Create the Wimp (sub)menu structure on an abts event for the
> Toolbox parent menu.

This is not really necessary. Why not simply create the submenu 
structure in 3) below? Delete it in 2).

> 2) Destroy the Wimp (sub)menu structure on a hidden event for the
> Toolbox parent menu.

> So far so good. One caveat I've discovered. The Toolbox menu in
> question is an iconbar menu, and when I select quit, I never get a
> hidden event. So I also need to destroy the Wimp (sub)menu structure
> on application quit, too. But that's off topic here...

Why? When the application goes, there is no need to destroy anything 
(unless you decided for some strange reason to allocate the memory in 
the RMA or somewhere else outside application space).

> 3) Listen for a submenu action event on the Toolbox menu item that's
> supposed to lead to the Wimp submenu. When it fires, call
> Wimp_CreateSubMenu to open the Wimp menu.

Yes, that sounds reasonable - except that if this is a submenu rather 
than a dialogue, the Toolbox will not really know what to do with the 
menu selection event, so I presume you are opening a non-Toolbox Wimp 
window?

> 4) The Toolbox *constantly* delivers these submenu action events. This
> is the crux of the problem. I have to keep track of the fact that I've
> opened the submenu already with a static bool, and don't keep trying
> to open it.

That sounds wrong. As you noted in 5) below, you do not know when this 
particular submenu is closed, so you cannot keep that flag up to date. 
I cannot see why the Toolbox would want to notify your program 
constantly. As I read the documentation you should only get the event 
once (after all, this is just a Wimp submenu warning event that the 
Toolbox passes on, and that event is sent only once, too). However, if 
the Toolbox decides to send it more than once, why not simply accept 
that fact and open the submenu each time you get the event?

> 5) Due to 4), I need to know when the submenu closes (but the main
> Toolbox Menu stays open), to reset my bool variable. This I can't do.
> I tried listening to the MenusDeleted Wimp message, but that only
> seems to be delivered when the *whole* menu structure is closed.

Yes, correct. There is no easy way to find out when a submenu is 
closed by the Wimp, but then, I have not seen any reason why a program 
should need to know.

-- 
---------------------------------------------------------------------
Martin Wuerthner         MW Software      http://www.mw-software.com/
        RISC OS Software for Design, Printing and Publishing
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Thread

Mixing Toolbox Menu objects with Wimp sub menus wpb <w.blatchley@yahoo.com> - 2011-11-15 13:16 -0800
  Re: Mixing Toolbox Menu objects with Wimp sub menus Martin Wuerthner <spamtrap@mw-software.com> - 2011-11-15 23:29 +0100
    Re: Mixing Toolbox Menu objects with Wimp sub menus wpb <w.blatchley@yahoo.com> - 2011-11-15 22:26 -0800
    Re: Mixing Toolbox Menu objects with Wimp sub menus Rik Griffin <nospam@denbridgemarine.com> - 2011-11-16 10:10 +0000
      Re: Mixing Toolbox Menu objects with Wimp sub menus Rik Griffin <nospam@denbridgemarine.com> - 2011-11-16 10:12 +0000
        Re: Mixing Toolbox Menu objects with Wimp sub menus wpb <w.blatchley@yahoo.com> - 2011-11-16 02:28 -0800
          Re: Mixing Toolbox Menu objects with Wimp sub menus Rik Griffin <nospam@denbridgemarine.com> - 2011-11-16 10:57 +0000
            Re: Mixing Toolbox Menu objects with Wimp sub menus wpb <w.blatchley@yahoo.com> - 2011-11-16 03:35 -0800
      Re: Mixing Toolbox Menu objects with Wimp sub menus wpb <w.blatchley@yahoo.com> - 2011-11-16 10:52 -0800
  Re: Mixing Toolbox Menu objects with Wimp sub menus Erik G <erikg@noname.invalid> - 2011-11-16 15:28 +0100
  Re: Mixing Toolbox Menu objects with Wimp sub menus Gerph <gerph@gerph.org> - 2011-11-17 01:54 -0800
    Re: Mixing Toolbox Menu objects with Wimp sub menus wpb <w.blatchley@yahoo.com> - 2011-11-17 06:40 -0800
      Re: Mixing Toolbox Menu objects with Wimp sub menus Gerph <gerph@gerph.org> - 2011-11-17 06:57 -0800
        Re: Mixing Toolbox Menu objects with Wimp sub menus wpb <w.blatchley@yahoo.com> - 2011-11-17 14:36 -0800
          Re: Mixing Toolbox Menu objects with Wimp sub menus Matthew Phillips <spam2011m@yahoo.co.uk> - 2011-11-18 08:01 +0000

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