Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!iuvax!cica!tut.cis.ohio-state.edu!bloom-beacon!ford-scf14!carol
From: carol@ford-scf14 (Carol Toomer-Keay)
Newsgroups: comp.windows.x
Subject: (none)
Message-ID: <8907212039.AA08707@ford-scf14.sun.com>
Date: 21 Jul 89 20:39:40 GMT
Sender: daemon@bloom-beacon.MIT.EDU
Organization: The Internet
Lines: 46

Hi,

I'm new to the newsgroup and haven't been too successful in
getting an answer to my question.  Could someone please respond 
just to let me know the message got there!  (thanks!)

I'm developing a user interface for a flight simulator and need
a popup menu with additional cascading menus.  Let me explain
what I mean by cascading menus in case they're called something
else in the real world!  The idea is to popup a menu and allow the
user to drag the mouse down the menu to make a selection.  Moving
the mouse to the far right edge of the last menu selection will
cause another menu to popup (a submenu).  I have been trying to get this 
second menu to popup just by entering the last menu selection.  It briefly 
appears on the screen and then the program crashes.  It appears to be
crashing when a LeaveNotify event is generated by the last menu pane.  A
call to XWarpPointer is called to warp the pointer to the submenu.  When 
the pointer leaves the last menu pane (using XWarpPointer) and warps to the
submenu a leave notify event is generated.  By the time the event arrives, 
the first menu is unmapped and an error occurs.

I don't have access to any toolkits on the machine I'm
using (a Megatek workstation) so the code is being written using XLib.
I only have two more weeks to finish this interface so I need
an answer ASAP.  HELP!

Does anyone have an XLib program that successfully produces these
menus?  I'd like one that will allow the user to easily customize the
menus if possible.  But I'll take anything that works!

Also, there is a bug in the code somewhere that occurs when the first
menu is created.  If the user presses the button and waits for the menu 
to appear on the screen, all is well.  If the button is released before 
the menu is completely drawn, the program crashes.  I've asked a few people
about this and was told it could be a hardware problem and/or a 
software problem.  Any ideas??   (Sorry this is so long....)

Many Thanks,

Carol Toomer Keay			Ford Aerospace Corporation
carol@scf1.fac.ford.com			1260 Crossman Avenue
(408) 743-3945				Sunnyvale, CA 94089

  to work, perchance to compile, ay there's the rub...
  whether tis nobler to program the ups and downs of XLib,
  or take a mouse against a C of menus and by deleting, end them!