graph.h

my-project-VC++学生信息系统

class CGraph: public CObject
{
public:
	CGraph::CGraph();
	CGraph::CGraph(CRect rcDraw);
	CGraph::CGraph(CRect rcDraw, int nMode);
	void SetDrawRect(CRect rcDraw);
	void SetDrawMode(int nMode);
	void AddData(unsigned int data);
	void Draw(CDC* pDC, bool isDispData=FALSE);
	void DelAllData();               //添加数据
	//绘制, 当isDispData为TRUE时, 在直方图的顶上显示数字或在饼图中显示百分比.
private:
	CRect m_rectDraw;			//用于绘制直方图和饼图的整个范围
	int m_nMode;				//0表示直方图,其他值表示饼图
	CUIntArray m_uDataArray;	//用于存放各个分量的值
	LOGFONT m_lfData;
	void DrawBar(CDC* pDC, bool isDispData);
	void DrawPie(CDC* pDC);
	void InitGraph(CRect rcDraw, int nMode);
};