Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!wuarchive!mit-eddie!uw-beaver!milton!unicorn!n8840371
From: n8840371@unicorn.cc.wwu.edu (Todd Crowe)
Newsgroups: comp.os.os2.programmer
Subject: Re: How is this done?
Message-ID: <1991Jan19.003312.13674@unicorn.cc.wwu.edu>
Date: 19 Jan 91 00:33:12 GMT
References: <1991Jan18.205603.25049@terminator.cc.umich.edu>
Distribution: na
Organization: Western Washington University, Bellingham WA.
Lines: 12

jwh@bodwin.ifs.umich.edu (Jim Howe) writes:
>When using the File Manager that comes with OS/2 1.2 I notice
>that if you select the 'File Details' option from the 'View'
>menu you are presented with a split window.  In the center
>of the window is a double bar.  The window lets you resize
>the two sides of the split window by clicking on the bar and
>moving it left or right.  How is something like this accomplished?
>Is there some type of window style that makes this a relatively
>easy thing to do?

If you have the PM SDK (MS version), check out the MDI example source.
The MDI example has exactly the functions as you're looking for.