mydrawnode.h

B+树的演示程序

#pragma once

#include "MyNode.h"

// MyDrawNode 命令目标

class MyDrawNode : public CObject
{
public:
	static CDC* m_pDC;
	static COLORREF m_crNormal;
	static COLORREF m_crLight;
	static CPen m_penThickNormal;
	static CPen m_penThinNormal;
	static CPen m_penThickDotNormal;
	static CPen m_penThickLight;
	static CPen m_penThinLight;
	static CPen m_penThickDotLight;
	static CFont m_font;
	static int N;

	MyNode* m_pnode;
	POINT m_position;
	RECT m_rect;

public:
	MyDrawNode();
	virtual ~MyDrawNode();

	static void SetDC(CDC* pDC);
	static void Initialization();
	static void SetN(int n);

    static void SetNormalColor(COLORREF cr);
	static void SetLightColor(COLORREF cr);
	
	static int DrawFont(POINT point,long key,bool bLight=true);
	static int DrawArrow(POINT ptFrom,POINT ptTo,int type/*=0 sPen, =1 bPen*/,bool bLight);

	void Create(POINT position);
	void DrawNode(MyNode* pnode,POINT position,bool bLight);
	void DrawBranch(bool bLight);
	void DrawLeaf(bool bLight);	

	void DrawInsertKey(long key);

	POINT GetFirstPointFrom();
	int GetPointDistance();
};