CListCtrl 几点经验

(部分转载)
每个List控件都有一个CHeaderCtrl。且它的ID是0。
CHeaderCtrl* pHeader =(CHeaderCtrl*)m_listCtrl.GetDlgItem(0);
即使List控件非report模式，Header控件也存在，只是此时它的尺寸为0。
可利用以下代码使得控件的第一列自适应大小：
m_listctrl.SetColumnWidth( 0, LVSCW_AUTOSIZE );
List 控件中的图标初始化时可如下设置：
m_listCtrl.InsertItem( LVIF_TEXT | LVIF_IMAGE, nRow, sItemText, 0, 0, nImage
, NULL);
在运行中需动态改变可调用SetItem()函数.
m_listCtrl.SetItem( 0, 0, LVIF_IMAGE, NULL, nImage, 0, 0, 0 );
删去图标可将nImage设置为-1。以下代码可将列表框的第一列限定大小：
BOOL CMyListCtrl::OnNotify(WPARAM wParam, LPARAM lParam, LRESULT* pResult)
{
        HD_NOTIFY   *pHDN = (HD_NOTIFY*)lParam;
        if((pHDN->hdr.code == HDN_BEGINTRACKW || pHDN->hdr.code == HDN_BEGIN
TRACKA)
                && pHDN->iItem == 0)            // Prevent only first (col#
0) from resizing
        {
                *pResult = TRUE;                // disable tracking
                return TRUE;                    // Processed message
        }
        return CListCtrl::OnNotify(wParam, lParam, pResult);
}
选定cell
CListCtrl::OnClick(...)
{
    int column;
    CRect m_rect;
    //the function below is provided in CListCtrl inPlace editing
    int index = GetRowColumnIndex(point, &column);
    if(index == -1)return;
    int offset = 0;
    for(int i = 0; i < column; i++)
      offset += GetColumnWidth(i);
    //Get the rectangle of the label and the icon
    GetItemRect(index, &m_rect, LVIR_BOUNDS);
    m_rect.left += offset + 4;
    //Get the columnWidth of the selected column
    m_rect.right = m_rect.left + GetColumnWidth(column);
    Update(index);
    CClientDC dc(this);    //this is the pointer of the current view
    dc.DrawFocusRect(m_rect);
}Select NonFirst cell:void CMyListCtrl::OnLButtonDown(UINT nFlags, CPoint point)
{
        CListCtrl::OnLButtonDown(nFlags, point);
        int index;
        point.x = 2;
        if( ( index = HitTest( point, NULL )) != -1 )
        {
                SetItemState( index, LVIS_SELECTED | LVIS_FOCUSED ,
                                LVIS_SELECTED | LVIS_FOCUSED);
        }
}
HitTestEx的代码如下：
判断点击的是哪一列：
// HitTestEx - Determine the row index and column index for a point
// Returns - the row index or -1 if point is not over a row
// point - point to be tested.
// col  - to hold the column index
int CMyListCtrl::HitTestEx(CPoint &point, int *col) const
{
int colnum = 0;
int row = HitTest( point, NULL );
if( col ) *col = 0;
// Make sure that the ListView is in LVS_REPORT
if( (GetWindowLong(m_hWnd, GWL_STYLE) & LVS_TYPEMASK) != LVS_REPORT )
  return row;
// Get the top and bottom row visible
row = GetTopIndex();
int bottom = row + GetCountPerPage();
if( bottom > GetItemCount() )
  bottom = GetItemCount();
// Get the number of columns
CHeaderCtrl* pHeader = (CHeaderCtrl*)GetDlgItem(0);
int nColumnCount = pHeader->GetItemCount();
// Loop through the visible rows
for( ;row <=bottom;row++)
{
  // Get bounding rect of item and check whether point falls in it.
  CRect rect;
  GetItemRect( row, &rect, LVIR_BOUNDS );
  if( rect.PtInRect(point) )
  {
   // Now find the column
   for( colnum = 0; colnum < nColumnCount; colnum++ )
   {
    int colwidth = GetColumnWidth(colnum);
    if( point.x >= rect.left
     && point.x <= (rect.left + colwidth ) )
    {
     if( col ) *col = colnum;
     return row;
    }
    rect.left += colwidth;
   }
  }
}
return -1;
}
选中一定范围内的Item
// SelItemRange - Selects/Deselect a range of items
// Returns              - The number of new items selected
// bSelect              - TRUE to select, FALSE to deselect
// nFirstItem           - index of first item to select
// nLastItem            - index of last item to select
int CMyListCtrl::SelItemRange(BOOL bSelect, int nFirstItem, int nLastItem)
{
        // make sure nFirstItem and nLastItem are valid
        if( nFirstItem >= GetItemCount() || nLastItem >= GetItemCount() )
                return 0;
        int nItemsSelected = 0;
        int nFlags = bSelect ? 0 : LVNI_SELECTED;
        int nItem = nFirstItem - 1;
        while( (nItem = GetNextItem( nItem, nFlags )) >=0
                        && nItem <= nLastItem )
        {
                nItemsSelected++;
                SetItemState(nItem, bSelect ? LVIS_SELECTED : 0, LVIS_SELECT
ED );
        }
        return nItemsSelected;
}
SetHeaderBitmap:static int _gnCols = 5;
static int _gnColSize[] =
{
18,21,22,18,380
};
static CString _gcsColLabel[] =
{
_T("x"),
_T("x"),
_T("x"),
_T("x"),
_T("Description:")
};
void CRightView::BuildColumns()
{
// Insert the columns into the list control
LV_COLUMN lvCol;
lvCol.mask = LVCF_FMT|LVCF_WIDTH|LVCF_TEXT|LVCF_SUBITEM;
for (int i = 0; i < _gnCols; ++i)
{
  lvCol.iSubItem = i;
  lvCol.pszText = (char*)(LPCTSTR)_gcsColLabel[i];
  lvCol.cx = _gnColSize[i];
  lvCol.fmt = LVCFMT_LEFT;
  m_ListCtrl->InsertColumn(i, &lvCol);
}
for (int x = 0; x < _gnCols-1; x++)
  SetHeaderBitmap(x, nHeaderBmps[x], HDF_STRING);
}
void CRightView::SetHeaderBitmap(int nCol, int nBitmap, DWORD dwRemove)
{
CHeaderCtrl* pHeader = (CHeaderCtrl*)GetDlgItem(0);
HD_ITEM hdi;
hdi.mask = HDI_FORMAT;
pHeader->GetItem (nCol, &hdi);
hdi.mask = HDI_BITMAP | HDI_FORMAT;
hdi.fmt  |= HDF_BITMAP;
hdi.hbm = (HBITMAP)::LoadImage(AfxGetInstanceHandle(),
  MAKEINTRESOURCE(nBitmap),IMAGE_BITMAP,0,0,LR_LOADMAP3DCOLORS);
if (dwRemove)
  hdi.fmt &= ~dwRemove;
pHeader->SetItem (nCol, &hdi);
}
删除功能的实现(VCBASE)要实现删除功能，必须取得选中表项的数和表项总数，并且需要从后向前进行依次删除，其原因是每个表项被删除后，其后各表项的索引号均会发生递减变化，如果采取从前向后删除的方法，就会造成无法正常删除选中的表项，其功能代码如下：void CVCLISTDlg::OnDel() //删除按钮功能{ // TODO: Add your control notification handler code hereint i,iState;int nItemSelected=m_ListCtrl.GetSelectedCount();//所选表项数int nItemCount=m_ListCtrl.GetItemCount();//表项总数if(nItemSelected<1) return;for(i=nItemCount-1;i>=0;i--){iState=m_ListCtrl.GetItemState(i,LVIS_SELECTED);if(iState!=0) m_ListCtrl.DeleteItem(i);}}通过专用按钮来实现排序功能，如本文的排序按钮对应的功能代码如下：(VCBASE)void CVCLISTDlg::OnSort() { // TODO: Add your control notification handler code herem_ListCtrl.SortItems((PFNLVCOMPARE)CompareFunc,0);
}还有很多,以后再贴吧!^_^

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CListCtrl 几点经验

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