map.h

Viaual C++实战演练一书的源代码,对于C++程序员有实际的借鉴意义．

class CMapObject;
class CDemo2Doc;

class CMapLayer : public CObject
{
private:
	CString GetFirstPara(CString& str);
	int GetSecondPara(CString& str);
	CDemo2Doc* m_pDoc;

public:
	int m_nMaxPoint;
	CString m_strLayerName;
	CArray<CMapObject*, CMapObject*> m_aObject;
	bool m_bCanDraw;
	void Draw(CDC* pDC, long style);

	CMapLayer(CDemo2Doc* pDoc, CArchive& ar);
	~CMapLayer();
};

/************************************************************/

class CMapObject : public CObject
{
public:
	double* m_pData;//海图元素数据
	COLORREF m_nColor;//图元颜色
	int m_nMaxPoint;//图元端点点数
	double m_fMinX, m_fMinY, m_fMaxX, m_fMaxY;//图元区域顶点坐标
	CDemo2Doc* m_pDoc;//文档指针
	long m_nStyle;//海图图元类型

	bool IsInView();
	virtual void Draw(CDC* pDC) = 0;//绘制海图元素

	CMapObject();
	~CMapObject() { if(m_pData) delete[] m_pData; }
};

class CMapPLine : public CMapObject
{
public:
	CMapPLine(CDemo2Doc* pDoc, CArchive& ar, int allpoint);
	void Draw(CDC* pDC);
};

class CMapRegion : public CMapObject
{
public:
	CMapRegion(CDemo2Doc* pDoc, CArchive& ar, int allpoint);
	void Draw(CDC* pDC);
};

class CMapText : public CMapObject
{
public:
	CString m_strText;

	CMapText(CDemo2Doc* pDoc, CArchive& ar);
	void Draw(CDC* pDC);
};