mscommdlg.cpp

MSComm控件使用实例,通过控件实现串口通信

// MSCommDlg.cpp : implementation file
//

#include "stdafx.h"
#include "MSComm.h"
#include "MSCommDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CMSCommDlg dialog

CMSCommDlg::CMSCommDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CMSCommDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CMSCommDlg)
	m_Port = 0;
	m_Receive = _T("");
	m_Send = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CMSCommDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CMSCommDlg)
	DDX_CBIndex(pDX, IDC_COMBOLIST, m_Port);
	DDX_Text(pDX, IDC_RECEIVEDATA, m_Receive);
	DDX_Text(pDX, IDC_SENDDATA, m_Send);
	DDX_Control(pDX, IDC_MSCOMM, m_Comm);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CMSCommDlg, CDialog)
	//{{AFX_MSG_MAP(CMSCommDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_SEND, OnSend)
	ON_BN_CLICKED(IDC_OPENPORT, OnOpenport)
	ON_CBN_SELCHANGE(IDC_COMBOLIST, OnSelchangeCombolist)
	ON_BN_CLICKED(IDC_CLOSTPORT, OnClostport)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMSCommDlg message handlers

BOOL CMSCommDlg::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
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CMSCommDlg::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 CMSCommDlg::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 CMSCommDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CMSCommDlg::InitComm()
{
	//设置串口
	m_Comm.SetCommPort(m_Port+1);
	// 设置数据读取格式为二进制方式
	m_Comm.SetInputMode(1);			
	// 设置传输参数
	m_Comm.SetSettings("9600,n,8,1");
	//缓冲区内有一个字符就可以接收
	m_Comm.SetRThreshold(1);
	// 指定接收缓冲区大小
	m_Comm.SetInBufferSize(1024);
	//指定接收缓冲区大小
	m_Comm.SetOutBufferSize(1024);
	// 清空接收缓冲区
	m_Comm.SetInBufferCount(0);				
	// 打开串口
	if(!m_Comm.GetPortOpen())
	{
		m_Comm.SetPortOpen(TRUE);
	}
}

BEGIN_EVENTSINK_MAP(CMSCommDlg, CDialog)
    //{{AFX_EVENTSINK_MAP(CMSCommDlg)
	ON_EVENT(CMSCommDlg, IDC_MSCOMM, 1 /* OnComm */, OnOnCommMscomm, VTS_NONE)
	//}}AFX_EVENTSINK_MAP
END_EVENTSINK_MAP()

void CMSCommDlg::OnOnCommMscomm() 
{
	// TODO: Add your control notification handler code here
	int nEvent;
	VARIANT m_input;
	char *str, *str1;
	int k,i;
	CString str2;
	//得到事件
    nEvent = m_Comm.GetCommEvent();
	switch(nEvent)
	{
		//只对接收数据事件进行处理
	case 2:
		// 接收缓冲区的字符数目
		k = m_Comm.GetInBufferCount();     
		if(k > 0)
		{
			//得到接收数据
			m_input = m_Comm.GetInput();
			str = (char*)(unsigned char*)m_input.parray->pvData;
		}
		//清除字符串中的不必要字符
		i = 0;
		str1 = str;
		while(i < k)
		{
			i++;
			str1++;
		}
		*str1  ='\0';                               
        str2 = (const char*)str;
		//得到最终数据
		m_Receive += (LPCTSTR)str2;
	default:
		break;
	}
	// 显示数据	
	UpdateData(FALSE);
}

void CMSCommDlg::OnSend() 
{
	// TODO: Add your control notification handler code here 
	//得到发送Edit控件的数据
	UpdateData(TRUE);
	int Count=m_Send.GetLength();
	//将发送数据传给m_Array
	CByteArray m_Array;
	m_Array.RemoveAll();
	m_Array.SetSize(Count);
    for(int i=0;i<Count;i++)
		m_Array.SetAt(i,m_Send[i]);
	//发送
	m_Comm.SetOutput(COleVariant(m_Array));
	m_Send = "";
	UpdateData(FALSE);
}

void CMSCommDlg::OnOpenport() 
{
	// TODO: Add your control notification handler code here
	InitComm();
}

void CMSCommDlg::OnSelchangeCombolist() 
{
	// TODO: Add your control notification handler code here
	CString m_str;
	//得到下拉列表内容
	GetDlgItemText(IDC_COMBOLIST, m_str);
	//得到串口号
	m_Port = atoi(LPCTSTR(m_str))-1;
}

void CMSCommDlg::OnClostport() 
{
	// TODO: Add your control notification handler code here
	if( m_Comm.GetPortOpen() )
	{
		// 关闭串口
		m_Comm.SetPortOpen(0);
	}
}