Re: MFC and User Defined objects

Greetings,

I am trying to PostMessage from a user defined generic class/object
in
MFC Dialog based application to Dialog/main window. I don't know
how
to do that. I am utilizing worker threads. A thread instantiates
an
object(from user defined generic class) and utilizes newly created
object. What user defined object code does is actually launch a
process, for sake for argument lets say, Windows Notepad.exe using
CreateProcess. As long as that process is running, I want to
PostMessage that updates a progress bar on Main GUI dialog. I can
do
it if I embed the code right into my application by writing the code
directly into it or declare, define and use member function of
Dialog/
main program itself. But I want to learn new material by
incorporting
a user defined class and then interacting with main application
code.
To recap:

MFC Dialog based Main application exectues-> It launches a
thread. ->
Thread uses user defined generic class to instantiate a new
bject. -


update progress bar.

Again, I don't know how to do this. How to tell newly created
object
from user defined class, which is running within a Worker Thread, to
successfully post message to main GUI? I know that Worker threads
are
not allowed to interact with GUI objects.

Any good software engineering solution will be greatly appreciated.
I
thank you.