Path: utzoo!attcan!uunet!wuarchive!mailrus!tut.cis.ohio-state.edu!bloom-beacon!AMD-26.HAC.COM!dhuff
From: dhuff@AMD-26.HAC.COM (Daryl Huff)
Newsgroups: comp.windows.x
Subject: transparent windows
Message-ID: <8909132031.AA02321@amd-26.hac.com>
Date: 13 Sep 89 20:31:46 GMT
Sender: daemon@bloom-beacon.MIT.EDU
Organization: The Internet
Lines: 18

I am writing an application that requires "transparent" windows.
I am hoping to achieve this by mapping multiple screens to the same
display surface.  Map data will be put into one screen and another screen
can be used for things like pull-down menus.  Now, assuming the LUT is
programmed correctly, a pull down menu does not obscure the map.  (I realize
that this mix may result in a jumbled mess is the LUT is not programmed
correctly.)  

My problem is in the event generation for the two screens.  I want events 
such as expose events to be reported on a per screen basis, but I want events
such as the pointing devices motion to be reported as if there was a cursor
in both screens.  For example, take two windows the first window, A, in screen 1 and  the second window, B, in screen 2.   Now, assume that window A is
adjacent to window B on the display surface.  As the cursor is moved 
across the display surface I want the EnterNotify, LeaveNotify, etc. events
to be generated for both windows even though they are in different screens.

Is this possible?  If so could you give me an idea of how to do it and if not
is there anything I can do to the server to make this work?