策略为王源代码扩展系列-K线图（4）-为K线图添加画线工具的画图操作

思路：在src/Client/StkUI/View/StockGraph.cpp中新增加1个类DrawKLineData(pDC)

DrawKLineData(pDC)类负责读取画线二进制数据，并画出来。

step 1：添加画图指标类DrawKLineData(pDC);

src/Client/StkUI/View/StockGraph.cpp

复制 DrawKLine(pDC)->DrawKLineData(pDC);

复制 CStockGraph::DrawOneKLine->CStockGraph::DrawOneKLineData();

step 2:调用画图指标

src/Client/StkUI/View/StockGraph.cpp

       void CStockGraph::DrawStock(CDC* pDC)
       {             
                DrawTechLine(pDC); //画窗口底部的技术指标线
		DrawKLine(pDC); //画K线图
		DrawKData(); //画周期K线的左上角信息

		/*custom extend 画线数据 by freeman*/
		DrawKLineData(pDC);
		/**********************************/
	}

CStockGraph::DrawOneKLineData()类

/*custom extend 画线工具数据 by freeman*/
//画线数据 by freeman
void CStockGraph::DrawKLineData(CDC* pDC)
{

	CStockInfo& info = m_CurStock.GetStockInfo();
	if (info.IsIndex())   //是指数
		return;

	if (m_nCurKType != CKData::ktypeDay)  //不是日K线
		return;

	DECLARE_COLOR_DEFINATION

	CKData& kdata = m_CurStock.GetKData(m_nCurKType);
	
	

		//得到要画区域的最大和最小值
	double	dMin = 0, dMax = 0;
	if (!GetKLineMinMaxInfo(m_nIndexStart, m_nIndexEnd, &dMin, &dMax))
		return;
	m_dMaxPrice = dMax;
	m_dMinPrice = dMin;

	CFile	file;
	CString	sFileName;
	if ( file.Open(sFileName, CFile::modeCreate | CFile::modeReadWrite))
	{
	
			file.Close();

	}
	
	// Draw K Line 循环画K线
	for (int k = m_nIndexStart; k <= m_nIndexEnd; k++)
	{
	//	DrawOneKLineData(pDC, k, k, &kdata, dMin, dMax, FALSE);
	}

}