CListCtrl自绘项

原理:
(1)在NM_CUSTOMDRAW消息处理函数中根据 dwDrawStage 状态来编写不同的处理代码
(2)主要是判断 CDDS_ITEMPREPAINT 状态
(3)不要在对话框资源管理器中设置CListCtrl控件的Owner draw fixed属性，否则在Debug模式下报错。

方法一，使用NM_CUSTOMDRAW消息映射
(1)声明消息处理函数：afx_msg void OnCustomDrawList ( NMHDR* pNMHDR, LRESULT* pResult );
(1)手动添加消息映射：ON_NOTIFY_REFLECT ( NM_CUSTOMDRAW, OnCustomDrawList )
(2)编写自绘消息处理函数

void CListCtrl2::OnCustomDrawList ( NMHDR* pNMHDR, LRESULT* pResult )
{
    NMLVCUSTOMDRAW*   pLVCD   =   reinterpret_cast<NMLVCUSTOMDRAW*>(pNMHDR);
    *pResult = CDRF_DODEFAULT;
    int rowIndex = static_cast<int>(pLVCD->nmcd.dwItemSpec);
    if(pLVCD->nmcd.dwDrawStage == CDDS_PREPAINT)
    {
        *pResult = CDRF_NOTIFYITEMDRAW;
    }
    else if (pLVCD->nmcd.dwDrawStage == CDDS_ITEMPREPAINT)
    {
        *pResult = CDRF_NOTIFYSUBITEMDRAW;
    }//画项
    else if (pLVCD->nmcd.dwDrawStage == (CDDS_ITEMPREPAINT | CDDS_SUBITEM))
    {
        int nitem = static_cast<int>   (pLVCD->nmcd.dwItemSpec);
        int nsubitem = pLVCD->iSubItem;
        CDC* pDC = CDC::FromHandle(pLVCD->nmcd.hdc);
        CString str;
        CRect rect;
        CSize msize;
        UINT nFormat = DT_VCENTER | DT_SINGLELINE;
        rect.left += 3; //调整自绘输出位置
        //get   rect   of   the   sub   item   which   is   going   to   paint
        GetSubItemRect(nitem,nsubitem,LVIR_BOUNDS,rect);
        //get   the   context   is   going   to   paint   on   the   subitem
        str = GetItemText(nitem,nsubitem);

        //如果选中
        if(LVIS_SELECTED == this->GetItemState(rowIndex,LVIS_SELECTED)) //判断当前项是否选中
        {
            //所画项是选中项
            pDC->SetTextColor(RGB(217,60,40));//字体颜色，因该是白色
            pDC->FillSolidRect(&rect,RGB(86,125,228));//背景,深蓝色吧，试试
        }
        else
        {
            pDC->SetTextColor(RGB(0,0,0));//字体颜色，因该是白色
            pDC->FillSolidRect(&rect,RGB(255,255,255));//背景,深蓝色吧，试试
        }
        msize = pDC->GetTextExtent(str);
        pDC->DrawText(str,   &rect,   nFormat); //自绘输出
        *pResult = CDRF_SKIPDEFAULT;
    }
}