Minimize Application A from Application B

[Bob]

Hi,
Application A (A legacy 16 Bit Windows App.) has a background process that
is required by Dot net Application B.
For security reasons Application A's GUI needs to be made unavailable to the
PC user.
I figured that if Application B minimised Application A and prevented it
from being restored that would do the job.
I can see how to enumerate through the running processes and get a handle
for Application A but I can't find the WINAPI call (SendMessage?) that I
need to make to minimise it.
I also read that a 'hook' might provide a way of preventing the user from
restoring Application A.
I would appreciate any guidance on how to correctly implement this
functionality.
thanks
Bob

 

[Bob]

Hi all,
Thanks
Problem Solved.
FindWindow to get the handle and ShowWindow to minimize it.
Well... It works with Notepad so hopefully it will work with the legacy app.
Bob