Re: More CChildFrame questions

David Wilkinson <>
Fri, 22 Jun 2007 10:17:05 -0500
GT wrote:

"Ajay Kalra" <> wrote in message

I'm talking about viewing options such as zoom factor, scroll bar
etc. Stuff that belongs to the view.

These are view specific and should stay in the view class.

BUT how do I get these settings from the view before its childframe is
destroyed, so I can use them in another instance of the same view in a
docking pane a few minutes later?

But then in my eyes the points to be
plotted on the chart also belong on the chart class!

Points to be plotted should be in the document. Multiple views can use
this data to plot.

I don't have multiple views of the same points. There is only one view class
per set of point data.


I thought you had solved this problem for yourself already. Either make
the "view data" object a member of the document, or if you only have one
document open at a time (SDI) then you could make the view data class a
singleton, and retrieve it. I would prefer the former, since the view
data is surely the view data for a specific document (as well as being
specific to the view).

An alternative to a singleton might be to make the view data object a
static data member of the view. But neither this nor singleton would
work for MDI.

David Wilkinson
Visual C++ MVP

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