mainfrm.cpp

RS232串口与SOCKET通信转换程序

// MainFrm.cpp : implementation of the CMainFrame class
//

#include "stdafx.h"
#include "CtoE.h"
#include "comm.h"
#include "dsock.h"
#include "backform.h"

#include "MainFrm.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CMainFrame

IMPLEMENT_DYNCREATE(CMainFrame, CFrameWnd)

BEGIN_MESSAGE_MAP(CMainFrame, CFrameWnd)
	//{{AFX_MSG_MAP(CMainFrame)
		// NOTE - the ClassWizard will add and remove mapping macros here.
		//    DO NOT EDIT what you see in these blocks of generated code !
	ON_WM_CREATE()
	ON_MESSAGE(WM_COMMNOTIFY,OnComm)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

static UINT indicators[] =
{
	ID_SEPARATOR,           // status line indicator
	ID_INDICATOR_CAPS,
	ID_INDICATOR_NUM,
	ID_INDICATOR_SCRL,
};

/////////////////////////////////////////////////////////////////////////////
// CMainFrame construction/destruction

CMainFrame::CMainFrame()
{
	// TODO: add member initialization code here
	
}

CMainFrame::~CMainFrame()
{
	delete sock;
	delete com;
}

int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
	if (CFrameWnd::OnCreate(lpCreateStruct) == -1)
		return -1;
	
	if (!m_wndToolBar.CreateEx(this, TBSTYLE_FLAT, WS_CHILD | WS_VISIBLE | CBRS_TOP
		| CBRS_GRIPPER | CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_DYNAMIC) ||
		!m_wndToolBar.LoadToolBar(IDR_MAINFRAME))
	{
		TRACE0("Failed to create toolbar\n");
		return -1;      // fail to create
	}

	if (!m_wndStatusBar.Create(this) ||
		!m_wndStatusBar.SetIndicators(indicators,
		  sizeof(indicators)/sizeof(UINT)))
	{
		TRACE0("Failed to create status bar\n");
		return -1;      // fail to create
	}

	// TODO: Delete these three lines if you don't want the toolbar to
	//  be dockable
	m_wndToolBar.EnableDocking(CBRS_ALIGN_ANY);
	EnableDocking(CBRS_ALIGN_ANY);
	DockControlBar(&m_wndToolBar);

	com = new Comm(this);
	com->initcomport();

	sock = new CDSock();
	sock->InitSocket();

	return 0;
}

BOOL CMainFrame::PreCreateWindow(CREATESTRUCT& cs)
{
	if( !CFrameWnd::PreCreateWindow(cs) )
		return FALSE;
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return TRUE;
}

/////////////////////////////////////////////////////////////////////////////
// CMainFrame diagnostics

#ifdef _DEBUG
void CMainFrame::AssertValid() const
{
	CFrameWnd::AssertValid();
}

void CMainFrame::Dump(CDumpContext& dc) const
{
	CFrameWnd::Dump(dc);
}

#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CMainFrame message handlers

long CMainFrame::OnComm(UINT wParam,long lParam)
{ 

	DWORD result;
	DWORD length;
	char s[1000];
	DWORD dwError;

	result=lParam;
	if( !(result&EV_RXCHAR||result&EV_RXFLAG||result&EV_RLSD) )
	{
		COMSTAT stat;
		ClearCommError(com->comv,&dwError,&stat);
		if (stat.cbInQue>=4095) 
			PurgeComm(com->comv,PURGE_RXCLEAR);
		if (stat.cbOutQue>=4095) 
			PurgeComm(com->comv,PURGE_TXCLEAR);
		return -1;
	}

	if(result & EV_RXFLAG || result&EV_RXCHAR)
	{   
		COMSTAT stat;
		ClearCommError(com->comv,&dwError,&stat);
		memset(s, 0, 1000);
		{
			DWORD err=ReadFile(
							com->comv,
							s,
							1,
							//min(1000,stat.cbInQue),
							&length,
							&ComOverlappedR
								);
			if(!err)
			{
				if(GetLastError()==ERROR_IO_PENDING)
				{
					while(	!GetOverlappedResult(	com->comv,
												&ComOverlappedR, &length, TRUE) 
												)
					{
						dwError=GetLastError();
						if( dwError==ERROR_IO_INCOMPLETE )
							continue;
						else
							ClearCommError(com->comv,&dwError,&stat);
					}
				}
				else
				ClearCommError(com->comv,&dwError,&stat);
			}
			if (length==0) 
			{
				COMSTAT stat;
				ClearCommError(com->comv,&dwError,&stat);
				if (stat.cbInQue>=4095) 
					PurgeComm(com->comv,PURGE_RXCLEAR);
				if (stat.cbOutQue>=4095) 
					PurgeComm(com->comv,PURGE_TXCLEAR);
				return 0;				
			}
			TRACE("COM : %d %s\n", length, s);
			sock->SendString(s, length);
			CBackForm *f = (CBackForm *)GetActiveFrame()->GetActiveView();
			f->m_recvstr = s;
			f->UpdateData(FALSE);
		}
		PurgeComm(com->comv,PURGE_RXCLEAR);
	} 
	else if(result & EV_RLSD)
	{   
	} 
	else
	{
		COMSTAT stat;
		ClearCommError(com->comv,&dwError,&stat);

		if (stat.cbInQue>=4095) 
			PurgeComm(com->comv,PURGE_RXCLEAR);
		if (stat.cbOutQue>=4095) 
			PurgeComm(com->comv,PURGE_TXCLEAR);

		ClearCommError(com->comv,&dwError,&stat);
		return 0;					
	}                                   	
	return 0;
}