charterminaldlg.cpp

这是一个用MSComm实现的一个通信客户端

// CharTerminalDlg.cpp : implementation file
//

#include "stdafx.h"
#include "CharTerminal.h"
#include "CharTerminalDlg.h"
#include "MSComm.h"

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

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCharTerminalDlg dialog

CCharTerminalDlg::CCharTerminalDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CCharTerminalDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CCharTerminalDlg)
	m_strReceive = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CCharTerminalDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CCharTerminalDlg)
	DDX_Control(pDX, IDC_EDIT1, m_nEdit);
	DDX_Text(pDX, IDC_EDIT1, m_strReceive);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CCharTerminalDlg, CDialog)
	//{{AFX_MSG_MAP(CCharTerminalDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_CLEAR, OnClear)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCharTerminalDlg message handlers

BOOL CCharTerminalDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	//初始化MSComm控件
	DWORD style=WS_VISIBLE|WS_CHILD;
	if(!m_Com.Create(NULL,style,CRect(0,0,0,0),this,IDC_MSCOMM1))
	{
		TRACE0("Failed to create OLE Communications Control\n");
		return -1;
	}
	m_Com.SetCommPort(1);
	m_Com.SetInBufferSize(1024);
	m_Com.SetOutBufferSize(512);

	if(!m_Com.GetPortOpen())
		m_Com.SetPortOpen(true);
	m_Com.SetInputMode(1);
	m_Com.SetSettings("9600,n,8,1");
	m_Com.SetRThreshold(1);
    m_Com.SetInputLen(0);
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CCharTerminalDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CCharTerminalDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CCharTerminalDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

BEGIN_EVENTSINK_MAP(CCharTerminalDlg, CDialog)
    //{{AFX_EVENTSINK_MAP(CCharTerminalDlg)
	ON_EVENT(CCharTerminalDlg, IDC_MSCOMM1, 1 /* OnComm */, OnCommMscomm, VTS_NONE)
	//}}AFX_EVENTSINK_MAP
END_EVENTSINK_MAP()

void CCharTerminalDlg::OnCommMscomm() 
{
	// TODO: Add your control notification handler code here
	VARIANT vResponse;
	char *str;
	char *str1;
	int k,nEvent,i;
	nEvent=m_Com.GetCommEvent();
	switch(nEvent)
	{
	case 2:
		k=m_Com.GetInBufferCount();
		if(k>0)
		{
			vResponse=m_Com.GetInput();
			str=(char*)(unsigned char*)vResponse.parray->pvData;
		}
		i=0;
		str1=str;
		while(i<k)
		{
			i++;
			str1++;
		}
		*str1='\0';
		m_strReceive=(const char *)str;
		break;
	case 3:
		break;
	case 4:
		break;
	case 5:
		break;
	case 6:
		break;

	}
    UpdateData(false);
	m_nEdit.Invalidate();
}

void CCharTerminalDlg::OnClear() 
{
	// TODO: Add your control notification handler code here
	m_strReceive.Empty();
	UpdateData(false);
	m_nEdit.Invalidate();
}