Question : CScrollView in a static CSplitterWnd pane

I am trying to put a CScrollView-derived view in
the lower right pane of a CSplitterWnd with 4 static
panes, using MSVC 4.0.  The other three panes are
derived from CView.

This worked fine in my last 16-bit app (MSVC 1.52)
but with MSVC 4.0, calling ResizeParentToFit() from
the OnSize() method of CScrollView only works properly
if both dimensions of the pane are smaller than the
logical view size (and both the horiz and vert
scrollbars appear).  If only one dimension is smaller,
then 1 scrollbar should appear, but it doesn't.

Stepping through the OnSize() code, the scrollbar actually
does appear, but disappears shortly thereafter (I believe
that it disappears when the View background is erased).  
The scrollbar disappears sometime after all OnSize()
methods have been processed by the four views, the
CSplitterWnd, and the enclosing CFrameWnd.  It is gone by
the time CScrollView::OnDraw() is called.  I don't know
what else to trap to narrow down the problem.

Answer : CScrollView in a static CSplitterWnd pane

(submitted for pschimpf)

OK, I have an answer:

Do NOT call ResizeParentToFit() from inside OnSize().
Instead, use PostMessage() to post a user-defined message.
Create a handler for that user-defined message that calls
ResizeParentToFit().

This works, although I have no satisfactory explanation for
why calling ResizeParentToFit() from OnSize() directly doesn't,
and neither does Microsoft Tech support, although they have
aknowledged the problem and suggested this fix.

They also suggested creating my own ResizeToFit at the frame
window level. At this level though, you have to account for
the width of scrollbars and splitter bars, etc. Any easy way
to do that might be to start by maximizing everything by calling
ResizeParentToFit(FALSE) in the OnInitialUpdate() method of
the CScrollView-derived class, then recording the size of the
frame window client area, and then not allow the frame window
area to be stretched beyond that size in the OnSizing() method
of the frame window. Of course, if you have zoom levels (like
I do), it gets a little more complicated...