Hello All!

I remember a few months ago there was a discusion about enhancing the
WPProgram WPS class to support environment overrides. I know someone was
working on one but I wanted to learn WPS programming and also had need of
such a beast.

So a few weeks ago I started working on it. I thought I'd share some info
that I came across.


WPProgram seems to spawn a thread for each program you start, to handle the
the WM_APPTERMINATENOTIFIY message from WinStartApp.

There is an API called WinStartApp. (I've always used DosStartSession or
DosExecPgm before)

I original used DosStartSession and one monitoring thread with a
termination queue but this caused problems with wpDeleteFromObjUseList()
not removing the in-use style.

WinStartApp will allow use of DosSetExtLIBPATH() so I now have support for
that too 

Couldn't seem to get ICollectionList* classes to even compile. It seemed
like it wanted my elements to be descendents of INotifier.

Seems to be a bug with the SOM compilier and the 'hh' emitter when then
used with VA. The metaclass is specified as a SOM name but there isn't one
for it yet. Solution is to manually change it to C++ name (ie. remove the
quotes)

AFAIK there are three ways of opening a program. wpOpen(), wpDrop, &
wpOpen() from and associated datafile. All of which require you to write
code for 


What I have now is a class which inherits from WPProgram. It adds two
settings pages, one for the environment overrides & the other for the
libpaths. Not all functionality is there yet. It's basically missing error
reporting & support for '*' as the exe. I also want to add environment
substitution in the overrides.

It is built with VisualAge C++ 3, current updates. Using DTS and the IOC libraries.

I'd like to post it and get some feedback.

Peter if you could let me know if it's ok to post, it's about 1300 lines total.

Anybody wanting a copy of the source and or dll, send me netmail here or
email to ratchet{at}idirect.com

Doug

--- GoldED/2 2.50+