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Splitter window and Tree View

Posted on 1998-05-14
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Last Modified: 2013-11-20
I'm trying to figure out how to route the windows messages in the following scenario.

I have the following classes
CWLSFrame - This frame handles create a static splitter window.  There are only two windows.  The left window is assigned the my CWLSTreeView class, and the right window is assigned to my CWLSEntityView class.

CWLSTreeView - This class takes care of the TreeCtrl and inserts items into the tree.  It also receives the message when the user changes the currently selected tree item.

CWLSEntityView - A generic view class of the Tree.

CWLSSoundView - When the user selects a "sound item" in the tree, I want it to use this view.

I understand how to manipulate the above classes into the different views.  My question is, when a user changes their selection in the Tree.  How can I get this message to the CWLSFrame so that it can change the splitter window?

Thanks in advance
Chris Paalman
cpaalman@cnc-inc.com
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Question by:cpaalman
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guruprasad031298 earned 800 total points
ID: 1311008
In your case CWLSFrame is the parent frame of CWLSTreeView, hence you can do this :

1. Handle the TVN_SELCHANGED reflected message in your tree control class member of the TreeView

2. In the handler, which will most probably be OnSelChanged, make a call to GetParentFrame () and type cast the result with (CWLSFrame *) to get a pointer to the parent frame window, say pWLSFrame

3. Add an user defined message, say WM_CHANGESPLITTER (message to change your splitter) to the CWLSFrame class and a handler for the same. Put your 'splitter change' functionality in the handler sunction.

4. Send WM_CHANGESPLITTER message from OnSelChanged handler of the tree control, using

pWLSFrame->SendMessage (WM_CHANGESPLITTER, (WPARAM) 0, (LPARAM)0)

which should call your WM_CHANGESPLITTER handler (say OnChangeSplitter) in CWLSFrame.
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by:cpaalman
ID: 1311009
WOW, this is the time I've been on this web site, and I asked my first question and in less than 2 hours I had the answer I needed.  Thanks!!!
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