Revolution wrote:
Thanks to all who have made suggestions for solving my problem but I don't
see a solution yet.
The actual problem is hiding the windows taskbar while a nonrev program is
running. Rev handles the taskbar hiding quite well with the command "hide
taskbar" which functions as long as rev is running. As soon as rev shuts
down (or the standalone shuts down) the taskbar reappears. This means that
rev must be running while the nonrev app is running in order to keep the
taskbar hidden. When the nonrev program quits, I need to have rev quit. Both
rev and the nonrev program are capable of launching apps, which leads to 2
approaches.
1. Use rev to launch the nonrev app and when the nonrev app completes, shut
down rev.
2. Use the nonrev app to launch rev at the point where the taskbar needs to
be hidden and shut rev down beyond that point.
Solution 1.
And now the complications start. The nonrev app has its own launcher which
must be used. This launcher shuts down after it has the nonrev app started.
The OpenProcess command won't work because the process that rev launched
(the launcher) has shut down. So what I need is a method for rev to check if
an app is running that it didn't start. Then I could periodically check to
see if the app is running and when it quits, I could shut down my rev app.
Further complication: This is all running from a CD on unknown systems which
may have unknown protection schemes, so the neat trick of writing to a file
and checking that file isn't going to work because my app may not have
permission to write to a drive on the user's system.
In summary: This method requires that rev have some method of checking if an
app that it didn't start, is still running.
Solution 2.
I am not sure that this method is an improvement on Solution 1 because now I
have the nonrev app somewhat more in control and if it was more
sophisticated, this problem wouldn't exist. This certainly works well, when
rev is called it hides the taskbar but when the nonrev app finishes I need
to shut down rev or the users taskbar stays hidden.
I've only loosely followed the whole thread - so don't know if this will
work or not ....
Solution 3. A sandwich made with "rev standalone"s.
a. Rev Standalone A starts running.
b. it starts the other launcher (App B)
c. Rev Standalone A then listens on some TCP/UDP port (say 8765)
meanwhile
d. The launcher runs, and starts up App B.
e. App B runs. When it's almost done, it start up another app (Rev
Standalone C) and then exits
f. Rev standalone C open a socket to 8765, sends a suitable message to
it and then exits.
......
g. Rev Standalone A gets a message on the port it's listening on,
verifies it, and then exits.
--
Alex Tweedly http://www.tweedly.net
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