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CListView with a derived CListCtrl

Posted on 2004-09-24
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Last Modified: 2013-11-20
Hello all:

   I've created a CListCtrl derived class that has a lot of functionality.  Now I find myself in a situation where it would be handy to use a CListView but I don't want to lose all of what I programmed for the CListCtrl, is there a way to tell the CListView what its list control is?  The end result should be a CListView that is using my personal CListCtrl.

Thanks,
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Question by:Catalepsy
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LVL 55

Expert Comment

by:Jaime Olivares
ID: 12147014
Use a CView object and put CYourListCtrl as a member.
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Author Comment

by:Catalepsy
ID: 12147116
  I'm trying to avoid that.  Although I've created the CView and was doing it that way before, I would prefer to use a CListView and tell it the CListCtrl it owns.

Thanks
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Accepted Solution

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Jaime Olivares earned 50 total points
ID: 12147606
You can't do it because every function (just a few) in CListView refers to a CListCtrl object without any extra functionlity, so maybe your special event may be disabled.
But  you can try to make your own CMyListView, no need a big code.
Take a look to Microsoft CListView implementation:

#define WC_LISTVIEW             "SysListView"

_AFXCVIEW_INLINE CListView::CListView() : CCtrlView(WC_LISTVIEW, AFX_WS_DEFAULT_VIEW)
      { }
_AFXCVIEW_INLINE CListCtrl& CListView::GetListCtrl() const
                { return *(CListCtrl*)this; }

BEGIN_MESSAGE_MAP(CListView, CCtrlView)
      //{{AFX_MSG_MAP(CListView)
      ON_WM_NCDESTROY()
      //}}AFX_MSG_MAP
END_MESSAGE_MAP()

BOOL CListView::PreCreateWindow(CREATESTRUCT& cs)
{
      return CCtrlView::PreCreateWindow(cs);
}

void CListView::DrawItem(LPDRAWITEMSTRUCT)
{
      ASSERT(FALSE);
}

BOOL CListView::OnChildNotify(UINT message, WPARAM wParam, LPARAM lParam,
      LRESULT* pResult)
{
      if (message != WM_DRAWITEM)
            return CCtrlView::OnChildNotify(message, wParam, lParam, pResult);

      ASSERT(pResult == NULL);       // no return value expected
      UNUSED(pResult); // unused in release builds

      DrawItem((LPDRAWITEMSTRUCT)lParam);
      return TRUE;
}

void CListView::RemoveImageList(int nImageList)
{
      HIMAGELIST h = (HIMAGELIST)SendMessage(LVM_GETIMAGELIST,
            (WPARAM)nImageList);
      if (CImageList::FromHandlePermanent(h) != NULL)
            SendMessage(LVM_SETIMAGELIST, (WPARAM)nImageList, NULL);
}

void CListView::OnNcDestroy()
{
      RemoveImageList(LVSIL_NORMAL);
      RemoveImageList(LVSIL_SMALL);
      RemoveImageList(LVSIL_STATE);

      CCtrlView::OnNcDestroy();
}
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