Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!wuarchive!uunet!microsoft!kensy
From: kensy@microsoft.UUCP (Ken SYKES)
Newsgroups: comp.windows.ms.programmer
Subject: Re: New Instance x,y offset.
Message-ID: <72331@microsoft.UUCP>
Date: 13 May 91 23:28:53 GMT
References: <1991May9.190903.16601@amc.com>
Reply-To: kensy@microsoft.UUCP (Ken SYKES)
Organization: Microsoft Corp., Redmond WA
Lines: 23

In article <1991May9.190903.16601@amc.com> schansen@polaris.amc.com (Scott Hansen) writes:
>I have a relatively novice question in regards to multiple instances of
>a program.  I would like to offset each instance's x,y position when a
>new copy is executed.  It is easy to tell if multiple copies are running
>with 'hPrevInstance', but I what to be able to pass the previous intance's
>x,y to the new copy for offsetting.
>
>I tried using 'GetInstanceData()' but I don't think I fully understand its
>usage.  Any tips or suggestions would be greatly appreciated.
>
>-Scott

Here is how GetInstanceData works.  A given program has a set of variables
in its data segment (its globals).  The thing to note is the OFFSET of a
variable in a data segment remains the same, regardless of the number of
instances.  So GetInstanceData allows you to copy  global variable's 
contents from one instance to another by specifying the instance (to establish
the data segment) and the address of the global (to establish the offset.)
Make sense?

Ken Sykes
Disclaimer: The above opinions are solely my own.