CListView problem

Jeff Rucker -- jrucker@ssccorp.com
Tuesday, March 11, 1997

Environment : Win95, VC++ 4.1

I'm having a problem with my list view (report mode) where only the first
column is showing up. All the api calls return OK, I just don't see
anything. I've had CListCtrl code working other places, just not as
CListView. Am I doing something wrong?

TIA





/////////////////////////////////////////////////////////////////////////////
// CSummaryView message handlers

void CSummaryView::OnInitialUpdate() 
{
	CListView::OnInitialUpdate();
	
	// TODO: Add your specialized code here and/or call the base class
	CListCtrl& cList = GetListCtrl();
   cList.ModifyStyle(LVS_LIST | LVS_ICON,LVS_REPORT);
   for (int n=0;n<3;n++)
   {
      cList.DeleteColumn(0);
   }
   cList.InsertColumn(0,"PDE Code",LVCFMT_LEFT,100,-1);
   cList.InsertColumn(1,"Parameters",LVCFMT_LEFT,100,-1);
   cList.InsertColumn(2,"Comment",LVCFMT_LEFT,100,-1);
}

#pragma warning(disable:4100)
void CSummaryView::OnUpdate(CView* pSender, LPARAM lHint, CObject* pHint) 
{
	CListCtrl& cList = GetListCtrl();
	CPDEDoc *pDoc = (CPDEDoc *)GetDocument();
   CString strCode,strComment;
   CParams cParams;

   cList.DeleteAllItems();
   int nIndex = 0,nItemIndex,nParamIndex;
   while (pDoc->GetNextCode(nIndex++,strCode,strComment,cParams))
   {
      if (strCode.IsEmpty())
         continue;
      //nItemIndex = cList.InsertItem(0,strCode);
      nItemIndex = cList.InsertItem(LVIF_TEXT, 0,strCode, 0, 0, 0, 0);
      CString strValue,strTemp;
      strValue = cParams.GetParam(0);
      nParamIndex = 1;
      while (1)
      {
         strTemp = cParams.GetParam(nParamIndex++);
         if (strTemp.IsEmpty())
            break;
         strValue += "," + strTemp;
      }
      cList.SetItemText(nItemIndex,1,strValue);
      cList.SetItemText(nItemIndex,2,strComment);
      cList.Update(nItemIndex);
   }
	return;
}
#pragma warning(default:4100)

-------------------------------------
Jeff Rucker
Software Systems Consulting
13641 Mercado Drive
Del Mar, CA 92014
(voice)619-481-3439 (fax)619-259-5554
jrucker@ssccorp.com
-------------------------------------

---

Paul Gerhart -- pgerhart@voicenet.com
Friday, March 14, 1997

Jeff Rucker wrote:
> 
> Environment : Win95, VC++ 4.1
> 
> I'm having a problem with my list view (report mode) where only the first
> column is showing up. All the api calls return OK, I just don't see
> anything. I've had CListCtrl code working other places, just not as
> CListView. Am I doing something wrong?
> 
> TIA
> 
> /////////////////////////////////////////////////////////////////////////////
> // CSummaryView message handlers
> 
> void CSummaryView::OnInitialUpdate()
> {
>         CListView::OnInitialUpdate();
> 
>         // TODO: Add your specialized code here and/or call the base class
>         CListCtrl& cList = GetListCtrl();
>    cList.ModifyStyle(LVS_LIST | LVS_ICON,LVS_REPORT);
>    for (int n=0;n<3;n++)
>    {
>       cList.DeleteColumn(0);
>    }
>    cList.InsertColumn(0,"PDE Code",LVCFMT_LEFT,100,-1);
>    cList.InsertColumn(1,"Parameters",LVCFMT_LEFT,100,-1);
>    cList.InsertColumn(2,"Comment",LVCFMT_LEFT,100,-1);
> }
> 


I did not study the other code (below  here in your original post) but
as regard the above...

Instead of your for loop I would do it via a single call
	cList.SetItemCount(0);

I would approach this by simply creating an
	LV_COLUMN lvcol;
structure and set the mask, format styles et al like this
	lvcol.mask = per your desire; //mask
	lvcol.fmt = per your desire; //format
	lvcol.cx = per your desire; //width
	lvcol.pszText = per your desire; //text
	lvcol.iSubItem = n; // cycle n from 0 to 2
and use the 		
	cList.InsertColumn( n, &lvcol ); // cycle n from 0 to 2
form of the call in a for loop with a switcj/case (or similar).

Mike B's book is very thorough on this topic, that is the way he
described it, I followed his approach, it works.

My guess is that the lvcol.subitem is not being handled correctly with
how you are doing your call.

Hope this helps. 





> #pragma warning(disable:4100)
> void CSummaryView::OnUpdate(CView* pSender, LPARAM lHint, CObject* pHint)
> {
>         CListCtrl& cList = GetListCtrl();
>         CPDEDoc *pDoc = (CPDEDoc *)GetDocument();
>    CString strCode,strComment;
>    CParams cParams;
> 
>    cList.DeleteAllItems();
>    int nIndex = 0,nItemIndex,nParamIndex;
>    while (pDoc->GetNextCode(nIndex++,strCode,strComment,cParams))
>    {
>       if (strCode.IsEmpty())
>          continue;
>       //nItemIndex = cList.InsertItem(0,strCode);
>       nItemIndex = cList.InsertItem(LVIF_TEXT, 0,strCode, 0, 0, 0, 0);
>       CString strValue,strTemp;
>       strValue = cParams.GetParam(0);
>       nParamIndex = 1;
>       while (1)
>       {
>          strTemp = cParams.GetParam(nParamIndex++);
>          if (strTemp.IsEmpty())
>             break;
>          strValue += "," + strTemp;
>       }
>       cList.SetItemText(nItemIndex,1,strValue);
>       cList.SetItemText(nItemIndex,2,strComment);
>       cList.Update(nItemIndex);
>    }
>         return;
> }
> #pragma warning(default:4100)
> 
> -------------------------------------
> Jeff Rucker
> Software Systems Consulting
> 13641 Mercado Drive
> Del Mar, CA 92014
> (voice)619-481-3439 (fax)619-259-5554
> jrucker@ssccorp.com
> -------------------------------------

-- 
#########################
# Paul Gerhart          #
# pgerhart@voicenet.com #
#########################

---

Become an MFC-L member | Вернуться в корень Архива |