serialportapidlg.cpp

这是本人所编的串口传数据的程序

// SerialPortAPIDlg.cpp : implementation file
//

#include "stdafx.h"
#include "SerialPortAPI.h"
#include "SerialPortAPIDlg.h"
#include "SerialPortControl.h"

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

extern volatile bool hEventRun;

/////////////////////////////////////////////////////////////////////////////
// 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()

/////////////////////////////////////////////////////////////////////////////
// CSerialPortAPIDlg dialog

CSerialPortAPIDlg::CSerialPortAPIDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CSerialPortAPIDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CSerialPortAPIDlg)
		// NOTE: the ClassWizard will add member initialization here
	m_recv = _T(""); //在构造函数中初始化变量
	m_send = _T("");
	//}}AFX_DATA_INIT
	// ote that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CSerialPortAPIDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CSerialPortAPIDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	DDX_Text(pDX, IDC_RECV_EDIT, m_recv);
	DDX_Text(pDX, IDC_SEND_EDIT, m_send);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CSerialPortAPIDlg, CDialog)
	//{{AFX_MSG_MAP(CSerialPortAPIDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_SEND_BUTTON, OnSendButton)
	ON_BN_CLICKED(IDC_CLEAR_BUTTON, OnClearButton)

	
	//}}AFX_MSG_MAP
	ON_MESSAGE(COM_RECVDATA, OnRecvData)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CSerialPortAPIDlg message handlers

BOOL CSerialPortAPIDlg::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

	hEventRun=true;
	fStopMsg = false;

	//打开串口
	if (OpenSerialPort1()==1)
	{
//		AfxMessageBox("COM1成功打开！");
	}
	else
		AfxMessageBox("打开串口失败！");


//创建并立即执行事件线程
//	DWORD dwParam;
	DWORD dwThreadID;
	if (!SetCommMask(hCom,EV_RXCHAR | EV_TXEMPTY))
	{
		AfxMessageBox("建立事件掩码失败！！");
	}
	hCommThread=CreateThread(NULL,
		0,
		(LPTHREAD_START_ROUTINE)SerialPort1ThreadProcess,
		AfxGetMainWnd()->m_hWnd,
		0,	
		&dwThreadID);
	if (hCommThread == INVALID_HANDLE_VALUE)
	{ 
		AfxMessageBox("事件线程建立失败！！");

	 }
	
	hEventRun=true;
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

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

void CSerialPortAPIDlg::OnClearButton() 
{
	// TODO: Add your control notification handler code here
	m_send = "";
	UpdateData(false);
	
}

void CSerialPortAPIDlg::OnSendButton() 
{
	// TODO: Add your control notification handler code here
	UpdateData(true);
	OVERLAPPED Wol={0};
	DWORD wCount = 0;
	Wol.hEvent=CreateEvent( NULL,
		TRUE,
		FALSE,
		NULL);
	WriteFile(hCom, 
		m_send,
		m_send.GetLength(), 
		NULL,
		&Wol);//发送数据
		
}


//接收数据后（通过监听线程发来的用户自定义消息）显示
void CSerialPortAPIDlg::OnRecvData(WPARAM wParam, LPARAM lParam)
{
	
	fStopMsg=true;
	char str[101];
	DWORD wCount = 0; //读取的字节数
	OVERLAPPED Rol={0};
	COMSTAT Rcs;
	DWORD dwErrrs;
		ClearCommError(hCom,
			&dwErrrs,
			&Rcs);
		Rol.hEvent=CreateEvent( NULL,
			TRUE,
			FALSE,
			NULL);
	if (ReadFile(hCom,
			&str,
			Rcs.cbInQue,
			&wCount, 
			&Rol))
	{  
		str[wCount] ='\0';
	 	m_recv += str;
		UpdateData(false);
	};
		
	fStopMsg=false;
}