canbusinterface.h

本源码实现在WinCE系统下

#if !defined(AFX_CANBUSINTERFACE_H__406E0D53_5C59_4C74_933D_5FF6AA4D22E1__INCLUDED_)
#define AFX_CANBUSINTERFACE_H__406E0D53_5C59_4C74_933D_5FF6AA4D22E1__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
// CanBusInterface.h : header file
//

//定义CAN数据共享内存的最大字节数
#define CAN_MEM_MAX_SIZE 1024
//定义CAN数据共享内存的文件名
#define CAN_MEM_NAME (_T("CANDATA"));
//定义CAN数据共享内存被修改后是否发送消息
#define CAN_MEM_IS_SYNC TRUE;

/////////////////////////////////////////////////////////////////////////////
// CCanBusInterface window
//定义内存文件内容变化消息字符串
const LPCTSTR  MEMFILECHANG = _T("MEMFILECHANGE");
//定义内存映射内容改变事件
typedef void (CALLBACK* ONMEMDATACHANGE)(LPVOID);

class CCanBusInterface : public CWnd
{
// Construction
public:
	CCanBusInterface();

// Attributes
public:

// Operations
public:

// Overrides
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CCanBusInterface)
	protected:
	virtual LRESULT WindowProc(UINT message, WPARAM wParam, LPARAM lParam);
	//}}AFX_VIRTUAL

// Implementation
public:
	virtual ~CCanBusInterface();

	// Generated message map functions
protected:
	//{{AFX_MSG(CCanBusInterface)
		// NOTE - the ClassWizard will add and remove member functions here.
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
public:
	DWORD m_MaxSize ; //内存文件大小
	CString m_MapName; //内存映射文件名称
	bool m_Syn; //是否同步
    ONMEMDATACHANGE m_OnMemDataChange; //内存映射区内容改变事件

	//创建或打开内存映射文件
	DWORD OpenFileMap(LPVOID pWnd);
	//关闭映射文件
	void CloseFileMap();
	//读取内存文件信息
	LPCTSTR ReadBuffer();
	//写入内存文件信息
	DWORD WriteBuffer(const char * buf, DWORD bufSize);
private:
	HANDLE m_hMapFile; //内存映射文件句柄
	LPTSTR m_pMapPointer ; //内存文件映射数据句柄
	HANDLE m_hSynEvent ; //写内存文件时，同步事件句柄
	DWORD m_SynMessageID ;//同步消息
	LPVOID m_pParentWnd ; //指定创建此类的窗体指针(可以不是CWnd)
};

/////////////////////////////////////////////////////////////////////////////

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_CANBUSINTERFACE_H__406E0D53_5C59_4C74_933D_5FF6AA4D22E1__INCLUDED_)