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Hi,

I am converting the windows interface of a VS2005 MFC project using the Prof-UIS library.

I have a CTreeView derived class called CdNetTree. I would like to insert two instances of this class into a CExtTabPageContainerFlatWnd (so that I have two tabs each containing a tree view).

The problem I have is with the protected constructors of the derived TreeView class - I cannot create an instance of the view and then pass a HWND or pWnd to the CExtTabPageContainerFlatWnd.

Is it possible to attach a CTreeView derived class to a CExtTabPageContainerFlatWnd? If so, the procedure would be most appreciated.

Regards,

Martin Ashton

Many thanks!

There are two solutions:

1) Make constructor of your tree view class public. Please note, MFC view and frame classes are designed for dynamic instantiation only and automatically delete themselves in the PostNcDestroy() virtual method.

2) Create your tree view dynamically via its runtime class information. This requires your view to have DECLARE_DYNCREATE/IMPLEMENT_DYNCREATE or DECLARE_SERIAL/IMPLEMENT_SERIAL features in its class declaration. Here is how to create your view window.

CExtTabPageContainerFlatWnd * pWndTPC = . . .
CRuntimeClass * pRTC = RUNTIME_CLASS( CYourViewClassNameHere );
CCreateContext context;
            context.m_pCurrentFrame = pMainFrameWindow; // or NULL
            context.m_pCurrentDoc = NULL;
            context.m_pLastView = NULL;
CYourViewClassNameHere *pYourView = (CExtPPVW_HostWnd*) pPreviewViewClass->CreateObject();
                        if( ! pYourView->Create(
                                                NULL,
                                                NULL,
                                                AFX_WS_DEFAULT_VIEW&(~(WS_BORDER))|WS_CLIPSIBLINGS|WS_CLIPCHILDREN,
                                                CRect(0,0,0,0),
                                                pWndTPC,
                                                AFX_IDW_PANE_FIRST,
                                                &context
                                                )
                                    )
            {
                        ASSERT( FALSE );
                        return . . .
            }
            pWndTPC->PageInsert( . . . pYourView . . . );