com.h

监视Modbus规约的通讯程序

// Com.h: interface for the CCom class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_COM_H__A2B10D2F_765C_11D7_8DD6_00B0D011F5AD__INCLUDED_)
#define AFX_COM_H__A2B10D2F_765C_11D7_8DD6_00B0D011F5AD__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#define WM_READ		(WM_USER + 0)
#define WM_WRITE	(WM_USER + 1)

class CCom  
{

public:
	DWORD Writedata();
	DWORD Readdata();
	DWORD Write(LPVOID lpBuffer, DWORD dwNumberOfBytesToWrite, bool bRTS = false);//LPVOID 
	bool Reopen(int Baudrate);
	bool IsOpen();
	DWORD Read(LPVOID lpBuffer, DWORD dwNumberOfBytesToRead);
	void Close();
	bool Open(LPCTSTR lpszFileName, DWORD dwBaudRate);
	CCom();
	virtual ~CCom();

protected:
	bool SetRts(bool bRTS);
	char m_csName[10];
//     HANDLE m_hCom;

};

#endif // !defined(AFX_COM_H__A2B10D2F_765C_11D7_8DD6_00B0D011F5AD__INCLUDED_)