Jim-

Have you checked the documentation on post20245 ?   The QtEasy.pdf  has a lot of details.  But it assumes you install 
the Qt development package on the target.  Is that the issue - just looking to install on a target without a complete 
development install?

(I am assuming X86 target - you didn't specify.)

>>>1. Can we have a complete list of libraries, binaries, scripts etc that have to be added to a standard OS install in 
order to provide a Qt4 runtime environment.

The attachment contains a Qt application "cEasy".  This is the list of libraries that cEasy requires to start.

Standard 6.5 install
           libc.so.3
           libstdc++.so.6
           libm.so.2
           libsocket.so.3
           libgf.so.1
           libz.so.2

Qt install into /usr/lib
           libQtGui.so.4
           libQtCore.so.4
           QtDeclarative.so.4
           libQtNetwork.so.4
           libQtScript.so.4
           libQtSvg.so.4
           libQtSql.so.4
           libQtXmlPatterns.so.4

a) I took a system without Qt installed, placed the above libraries in /usr/lib.
b) Set the three environment variables (see 4. below)
c) Untarred attachment  to /qtEasy
d) Telneted in
e) Ran from telnet...
     # /usr/photon/bin/devi-hid -Pr kbd mouse 
f) From telnet direcory /qtEasy... ran
     # ./cEasy -qws

Everything worked as expected - even on SVGA - with only the above steps.

>>>2. What services have to be running in order to accommodate a Qt4 executable? What I have been doing is to boot to a 
command line screen i.e. everything except Photon. Is this correct?

Yes.  From a # prompt, the system should be setup so "ph" correctly starts photon.   BUT you must exit photon to start a
 Qt app.  (Photon is not necessary - only a test)

All you need to run a Qt app is a properly configued "gf" environment (graphics framework).  A CD-install of SDP 6.5 has
 "gf" already setup.   A test of gf (for i830 - not vesa/svga) is that vsync should run and display on screen.  (Also, "
vsync 2" and "vsync 3")   You can even run "vsync 2" while a Qt app is running - vsync will overlay.

>>>3. I understand that not all graphics drivers will support Qt4. We are using the i830 driver. Will the 6.5.0 issued 
driver work with Qt or do we need to use a later development version?
Yes.  I use devg-gma9xx.so "out of the box".  Actually, any "gf" driver should work since Qt only requires one layer - 
even SVGA.  Qt uses only a "framebuffer" approach.

io-display requires libffb.so.2 in addition to driver, libc and libm.

4. What environment variables are required for Qt applications?
export QWS_DISPLAY=qnx
export QWS_KEYBOARD=qnx
export QWS_MOUSE_PROTO=qnx

>>>5. Are you able to provide a trivial, stand alone Qt4 app that can be used to verify the run-time setup. (The medical
 demo is too complex).

Agreed.  That is why I created port20245 and post20394.  The attachment to this post contains the runtime components 
from the first project.

Dennis