commdlg.cpp

一个不错的串口通信程序 可以提供学习串口通信的一些容

// commDlg.cpp : implementation file
//

#include "stdafx.h"
#include "comm.h"
#include "commDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CCommDlg dialog

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

void CCommDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CCommDlg)
	DDX_Control(pDX, IDC_STOPRECV, m_stop);
	DDX_Control(pDX, IDC_HEXSEND, m_hexsend);
	DDX_Control(pDX, IDC_COMSEEPED, m_speed);
	DDX_Control(pDX, IDC_HEX, m_hex);
	DDX_Control(pDX, IDC_COMSELECT, m_com);
	DDX_Control(pDX, IDC_MSCOMM1, m_Comm);
	DDX_Text(pDX, IDC_EDIT1, m_SendData);
	DDX_Text(pDX, IDC_EDIT2, m_ReceiveData);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CCommDlg, CDialog)
	//{{AFX_MSG_MAP(CCommDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
	ON_BN_CLICKED(IDC_BUTTON2, OnButton2)
	ON_CBN_SELENDOK(IDC_COMSELECT, OnComselect)
	ON_CBN_SELENDOK(IDC_COMSEEPED, OnComspeed)
	ON_BN_CLICKED(IDC_STOPRECV, OnStoprecv)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCommDlg message handlers

BOOL CCommDlg::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
	m_com.SetCurSel(0);
	m_speed.SetCurSel(2);
	return TRUE;  // return TRUE  unless you set the focus to a control
}

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

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

void CCommDlg::OnComm() 
{
if(stop)return;
VARIANT m_input1;
COleSafeArray m_input2;
long length,i;
BYTE data[1024];
CString str;
if(m_Comm.GetCommEvent()==2)//接收缓冲区内有字符
{
m_input1=m_Comm.GetInput();//读取缓冲区内的数据
m_input2=m_input1;//将VARIANT型变量转换为ColeSafeArray型变量
length=m_input2.GetOneDimSize();//确定数据长度
for(i=0;i<length;i++)
m_input2.GetElement(&i,data+i);//将数据转换为BYTE型数组

for(i=0;i<length;i++)//将数组转换为Cstring型变量
{
BYTE a=* (char *)(data+i);
if(m_hex.GetCheck())
str.Format("%02X ",a);
else str.Format("%c",a);
m_ReceiveData+=str;
}
}
UpdateData(FALSE);//更新编辑框内容
}
char HexChar(char c)//检测一个字符是不是十六进制字符，若是返回相应的值，否则返回0x10；
{	if((c>='0')&&(c<='9'))
	return c-0x30;
	else if((c>='A')&&(c<='F'))
	return c-'A'+10;
	else if((c>='a')&&(c<='f'))
	return c-'a'+10;
	else return 0x10;
}
int Str2Hex(CString str,CByteArray &data)
{//将一个字符串作为十六进制串转化为一个字节数组，字节间可用空格分隔，返回转换后的字节数组长度，同时字节数组长度自动设置。
	int t,t1;
	int rlen=0,len=str.GetLength();
	data.SetSize(len/2);
	for(int i=0;i<len;)
	{char l,h=str[i];
	if(h==' ')
	{i++;
	continue;
	}
	i++;
	if(i>=len)break;
	l=str[i];
	t=HexChar(h);
	t1=HexChar(l);
	if((t==16)||(t1==16))
		break;
	else t=t*16+t1;
	i++;
	data[rlen]=(char)t;
	rlen++;
	}
	data.SetSize(rlen);
	return rlen;
}
	
void CCommDlg::OnButton1() 
{
if( !m_Comm.GetPortOpen())
m_Comm.SetPortOpen(TRUE);//打开串口
UpdateData(TRUE);
if(m_hexsend.GetCheck())
{CByteArray data;
int len=Str2Hex(m_SendData,data);
m_Comm.SetOutput(COleVariant(data));//发送数据
}
else m_Comm.SetOutput(COleVariant(m_SendData));//发送数据
}

void CCommDlg::OnButton2() 
{
m_ReceiveData.Empty();//清除接收对话框中的数据

//m_SendData.Empty();//清除发送对话框中的数据

UpdateData(FALSE);
	
}

void CCommDlg::OnComselect() 
{
if(m_Comm.GetPortOpen())
m_Comm.SetPortOpen(FALSE);

m_Comm.SetCommPort(m_com.GetCurSel()+1);

}

void CCommDlg::OnComspeed() 
{
	CString temp;
	int i=m_speed.GetCurSel();
	switch(i)
	{
	case 0:
		i=2400;
		break;
	case 1:
		i=4800;
		break;
	case 2:
		i=9600;
		break;
	case 3:
		i=19200;
		break;
	case 4:
		i=38400;
		break;
	}
	temp.Format("%d,n,8,1",i);
	m_Comm.SetSettings(temp);
}


void CCommDlg::OnStoprecv() 
{
stop=!stop;
if(stop)
m_stop.SetWindowText("继续接收");
else
m_stop.SetWindowText("停止接收");
}