Re: How to access tree control from win explorer type app

From:
"Scott McPhillips [MVP]" <org-dot-mvps-at-scottmcp>
Newsgroups:
microsoft.public.vc.language
Date:
Sat, 26 Aug 2006 23:42:07 -0400
Message-ID:
<uS#GFrYyGHA.4576@TK2MSFTNGP06.phx.gbl>
MK wrote:

I have a dialogue that is opened from one the application menus

void CmkedmApp::OnToolsMapImagePath()
{
    NewTreeItemDlg objNewTreeItemDlg;
    objNewTreeItemDlg.DoModal();
}

where the user can select a file that is to be added to the tree
control.

I've seen a few example programs, which have helped a great deal, but
haven't found anything yet of how to access the tree control so I can
add items to it from a different dialogue?

Regards,

Michael


Accessing a control from a different dialog would be poor practice,
especially from a modal dialog. (Because a modal dialog should also
support the Cancel button.)

MFC provides a built in mechanism for updating views. Call
UpdateAllViews, which produces calls to OnUpdate for each view. In
turn, each view would update its own controls using the passed
parameters and doc data.

To access the CDocument::UpdateAllViews, note that your CWinApp class
contains a list of all doc templates, and they contain a list of all
docs. See GetFirstDocTemplatePosition, GetFirstDocPosition, etc.

--
Scott McPhillips [VC++ MVP]

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