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// 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; 
}