让CtrlList的某一行自定义颜色

参考文章：https://blog.csdn.net/weixin_43913330/article/details/90287250

 

定义类继承CtrlList

 

头文件中添加：

CMap<DWORD, DWORD&, COLORREF, COLORREF&> MapItemColor;
CMap<DWORD, DWORD&, COLORREF, COLORREF&> MapFontColor;

 

用于存储自定义设置的列表项颜色、字体等

需要添加专门用于自绘控件的事件响应：

//sonne 2020-08-18
void 类名::OnNMCustomdraw(NMHDR *pNMHDR, LRESULT *pResult)
{
    int col_num = get_col_num();
    
    NMLVCUSTOMDRAW* pLVCD = reinterpret_cast<NMLVCUSTOMDRAW*>(pNMHDR);
    // Take the default processing unless we set this to something else below.
    *pResult = CDRF_DODEFAULT;
    // 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;
    }
    else if (CDDS_ITEMPREPAINT == pLVCD->nmcd.dwDrawStage)
    {
        // This is the notification message for an item. We'll request
        // notifications before each subitem's prepaint stage.
        *pResult = CDRF_NOTIFYSUBITEMDRAW;
    }
    else if ((CDDS_ITEMPREPAINT | CDDS_SUBITEM) == 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.         
        COLORREF ItemColor;
        DWORD dw = (pLVCD->iSubItem + col_num * pLVCD->nmcd.dwItemSpec);

        if (MapItemColor.Lookup(dw, ItemColor))    
        {
            pLVCD->clrTextBk = ItemColor;
            //SetFont(m_Font, false);
        }
        else
        {
            //如果不是选择的“行”和“列”就设置成系统默认的那种颜色
            pLVCD->clrTextBk = 16777215;
        }
        if (MapFontColor.Lookup(dw, ItemColor))
        {
            pLVCD->clrText = ItemColor;
            //SetFont(m_Font, false);
        }
        else
        {
            pLVCD->clrText = 0;
        }
        /*
        if (pLVCD->iSubItem == m_iRow)
        {
            if (m_FontFlag)
            {
                m_FontFlag = FALSE;
                SetFont(m_Font, false);
            }            
        }
        */
        *pResult = CDRF_DODEFAULT;
    }
}

需要将之注册到消息映射里：

BEGIN_MESSAGE_MAP(COnlineDeviceListCtrl, CListCtrl)
　　ON_NOTIFY_REFLECT(NM_CUSTOMDRAW, OnNMCustomdraw)
END_MESSAGE_MAP()

 

对表格项进行自定义的一些函数，调用相关函数，自动会响应OnNMCustomdraw从而达到自绘的效果：

//sonne 2020-08-18
void 类名::SetCellColor(int iRow, int iCol, COLORREF color)
{    
    int col_num = get_col_num();
    DWORD iItem = iRow * col_num + iCol;
    //设置某行的颜色
    MapItemColor.SetAt(iItem, color);
    //重新染色
    this->RedrawItems(iRow, iRow);
    //设置焦点
    this->SetFocus();    
    UpdateWindow();
}


/*
 *  sonne 
 *  2020-08-18
 *  为列表某一行自定义颜色
 */
void 类名::set_ctrllist_row_color(int row, COLORREF color)
{
    int col_num = get_col_num();
    for (int i=0; i<col_num; i++)
    {
        SetCellColor(row, i, color);
    }
}


/*
 *  sonne 
 *  2020-08-18
 *  获取表格的列数
 */
int 类名::get_col_num()
{
    CHeaderCtrl* pHeaderCtrl = GetHeaderCtrl();
    int col_num = 0;
    if (pHeaderCtrl)
    {
        col_num = pHeaderCtrl->GetItemCount();
    }
    return col_num;
}


//sonne 2020-08-18
void 类名::SetFontColor(int iRow, int iCol, COLORREF color)
{
    int col_num = get_col_num();
    DWORD iItem = iRow * col_num + iCol;
    //设置单元格字体的颜色
    MapFontColor.SetAt(iItem, color);
    //重新染色
    this->RedrawItems(iRow, iRow);
    //设置焦点
    this->SetFocus();    
    UpdateWindow();
}