Re: CustomDraw with CListCtrl

From:

mosfet <john.doe@anonymous.org>

Newsgroups:

microsoft.public.vc.mfc

Date:

Fri, 07 Sep 2007 13:26:30 +0200

Message-ID:

<46e13566$0$26287$426a74cc@news.free.fr>

Matrixinline a ?crit :

On Sep 7, 2:37 am, mosfet <john....@anonymous.org> wrote:

Hi,

I am trying to modify font on text displayed in a CListCtrl in report
mode by using customdraw.
My problem is I don't know in which stage I have to do it and all my
experiments are unsuccessful.
When I try to display something, it's always above the default text...

check

/ First thing - check the draw stage. If it's the control's prepaint
    // stage, then tell Windows we want messages for every item.

    if ( CDDS_PREPAINT == pLVCD->nmcd.dwDrawStage )
    {
        *pResult = CDRF_NOTIFYITEMDRAW;
    }

Can you give more details and post code to check what you are
missing ..

Anup K

First try ;

BOOL CListCtrlCommands::GetCellRect(int iRow, int iCol, int nArea, CRect
&rect)
{
  if(iCol)
   return GetSubItemRect(iRow, iCol, nArea, rect);

  if(GetColumnCount()== 1)
   return GetItemRect(iRow, rect, nArea);

  iCol = 1;
  CRect rCol1;
  if(!GetSubItemRect(iRow, iCol, nArea, rCol1))
   return FALSE;

  if(!GetItemRect(iRow, rect, nArea))
   return FALSE;

  rect.right = rCol1.left;

  return TRUE;
}

NMLVCUSTOMDRAW* pLVCD = reinterpret_cast<NMLVCUSTOMDRAW*>(pNMHDR);

    switch(pLVCD->nmcd.dwDrawStage)
    {
    case CDDS_PREPAINT:
        *pResult = CDRF_NOTIFYSUBITEMDRAW; // ask for subitem
notifications.
        break;

    case CDDS_ITEMPREPAINT:
        *pResult = CDRF_NOTIFYSUBITEMDRAW;
        break;

    case CDDS_ITEMPREPAINT|CDDS_SUBITEM:
        {
            int iCol = pLVCD->iSubItem;
            int iRow = pLVCD->nmcd.dwItemSpec;
            CString sItem = GetItemText(iRow, iCol);
            CRect rc;
            GetCellRect(iRow, iCol, LVIR_BOUNDS, rc);

            // get the device context.
            CDC *pDC= CDC::FromHandle(pLVCD->nmcd.hdc);

            // paint the text centered.
            pDC->DrawText(sItem , rc, DT_CENTER);

            *pResult= CDRF_SKIPDEFAULT;
            break;
        }

    default:// it wasn't a notification that was interesting to us.
        *pResult = CDRF_DODEFAULT;
    }

Another try :

*pResult = CDRF_DODEFAULT;

     if ( CDDS_PREPAINT == pLVCD->nmcd.dwDrawStage )
         {
         *pResult = CDRF_NOTIFYITEMDRAW;
         }
     else if ( CDDS_ITEMPREPAINT == pLVCD->nmcd.dwDrawStage )
         {
         // This is the pre-paint stage for an item. We need to make
another
         // request to be notified during the post-paint stage.

         *pResult = CDRF_NOTIFYPOSTPAINT;
         }
     else if ( CDDS_ITEMPOSTPAINT == pLVCD->nmcd.dwDrawStage )
    {
        // This is the prepaint stage for a subitem. Here's where we set the
        // item's text and background colors. Our return value will tell
        // Windows to draw the subitem itself, but it will use the new colors
        // we set here.

        int nItem = static_cast<int> (pLVCD->nmcd.dwItemSpec);
        int nSubItem = pLVCD->iSubItem;

        LVITEM rItem;
        ZeroMemory ( &rItem, sizeof(LVITEM) );
         rItem.mask = LVIF_IMAGE | LVIF_STATE;
         rItem.iItem = nItem;
         rItem.stateMask = LVIS_SELECTED;
         GetItem ( &rItem );

        //If this item is selected, redraw the icon with its normal colors.
        if ( rItem.state & LVIS_SELECTED )
        {
            CDC* pDC = CDC::FromHandle ( pLVCD->nmcd.hdc );

            // Get the rect that holds the item's icon.
            CRect rc;
            GetItemRect ( nItem, &rc, LVIR_ICON );

            // Draw the icon.
            //if (m_cImageList.GetSafeHandle() != NULL){
            CImageList* pImgList = GetImageList( LVSIL_SMALL );
            if (pImgList != NULL){
                pImgList->Draw ( pDC, rItem.iImage, rc.TopLeft(),
                    ILD_TRANSPARENT );
            }

            // Draw text
            /*CString sItem = GetItemText(nItem, 0);
            GetItemRect ( nItem, &rc, LVIR_LABEL );
            DrawHTML(pLVCD->nmcd.hdc, (LPCTSTR)sItem, sItem.GetLength(),
rc,DT_LEFT);*/

            //delete pMemDC;
            *pResult = CDRF_SKIPDEFAULT;
        }
    }