实例介绍
【实例简介】
【实例截图】
【核心代码】
// DemoDlg.cpp : implementation file
//
#include "stdafx.h"
#include "Demo.h"
#include "DemoDlg.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()
/////////////////////////////////////////////////////////////////////////////
// CDemoDlg dialog
CDemoDlg::CDemoDlg(CWnd* pParent /*=NULL*/)
: CDialog(CDemoDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CDemoDlg)
// NOTE: the ClassWizard will add member initialization here
//}}AFX_DATA_INIT
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
void CDemoDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CDemoDlg)
DDX_Control(pDX, IDC_COMBO_COMM_STOP_BIT, m_ComboCOMStopBit); //停止位
DDX_Control(pDX, IDC_COMBO_COMM_DATA_BIT, m_ComboCOMDataBit); //数据位
DDX_Control(pDX, IDC_COMBO_COMM_CHECK_BIT, m_ComboCOMCheckBit); //校验位
DDX_Control(pDX, IDC_COMBO_COMM_BAUD, m_ComboCOMBaud); //波特率
DDX_Control(pDX, IDC_COMBO_COMM_NUM, m_ComboCOMNum); //串口
DDX_Control(pDX, IDC_MSCOMM_TEST, m_MSComm); //串口设置
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CDemoDlg, CDialog)
//{{AFX_MSG_MAP(CDemoDlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDC_BTN_COMM_OPEN, OnBtnCommOpen) //打开串口
ON_BN_CLICKED(IDC_BTN_COMM_CLOSE, OnBtnCommClose) //关闭串口
ON_BN_CLICKED(IDC_BTN_SEND, OnBtnSend) //读取测量值
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CDemoDlg message handlers
BOOL CDemoDlg::OnInitDialog() //定义组合框控件
{
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); //获得系统菜单
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
// 初始化下拉列表
m_ComboCOMNum.InsertString(0, "COM1");
m_ComboCOMNum.InsertString(1, "COM2");
m_ComboCOMNum.InsertString(2, "COM3");
m_ComboCOMNum.InsertString(3, "COM4");
m_ComboCOMNum.InsertString(4, "COM5");
m_ComboCOMNum.InsertString(5, "COM6");
m_ComboCOMNum.InsertString(6, "COM7");
m_ComboCOMNum.InsertString(7, "COM8");
m_ComboCOMNum.SetCurSel(0);
//
m_ComboCOMBaud.InsertString(0, "4800");
m_ComboCOMBaud.InsertString(1, "9600");
m_ComboCOMBaud.InsertString(2, "19200");
m_ComboCOMBaud.InsertString(3, "34800");
m_ComboCOMBaud.InsertString(4, "43000");
m_ComboCOMBaud.InsertString(5, "56000");
m_ComboCOMBaud.InsertString(6, "57600");
m_ComboCOMBaud.InsertString(7, "115200");
m_ComboCOMBaud.SetCurSel(1);
//
m_ComboCOMCheckBit.InsertString(0, "NONE");
m_ComboCOMCheckBit.InsertString(1, "ODD");
m_ComboCOMCheckBit.InsertString(2, "EVEN");
m_ComboCOMCheckBit.SetCurSel(0);
//
m_ComboCOMDataBit.InsertString(0, "6");
m_ComboCOMDataBit.InsertString(1, "7");
m_ComboCOMDataBit.InsertString(2, "8");
m_ComboCOMDataBit.SetCurSel(2);
//
m_ComboCOMStopBit.InsertString(0, "1");
m_ComboCOMStopBit.InsertString(1, "2");
m_ComboCOMStopBit.SetCurSel(0);
return TRUE; // return TRUE unless you set the focus to a control
}
void CDemoDlg::OnSysCommand(UINT nID, LPARAM lParam) //系统截获控制命令
{
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 CDemoDlg::OnPaint() //是WM_PAINT消息的消息处理函数
{
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 CDemoDlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}
void CDemoDlg::OnBtnCommOpen() //打开串口代码
{
// TODO: Add your control notification handler code here
CString strCOMNum = "";
CString strComBaud = "";
CString strComCheckBit = "";
CString strComDataBit = "";
CString strComStopBit = "";
// 获取下拉框参数
m_ComboCOMNum.GetLBText(m_ComboCOMNum.GetCurSel(), strCOMNum); //GetCurSel()，获取当前光标的位置
m_ComboCOMBaud.GetLBText(m_ComboCOMBaud.GetCurSel(), strComBaud);
m_ComboCOMCheckBit.GetLBText(m_ComboCOMCheckBit.GetCurSel(), strComCheckBit); //GetLBText，从组合框的列表框中获取字符串
m_ComboCOMDataBit.GetLBText(m_ComboCOMDataBit.GetCurSel(), strComDataBit);
m_ComboCOMStopBit.GetLBText(m_ComboCOMStopBit.GetCurSel(), strComStopBit);
// 获取串口号
strCOMNum = strCOMNum.Right(1);
// 转换成整数
int nCom = atoi((LPSTR)(LPCSTR)strCOMNum);
// 获取校验位
CString strCheckBit = "";
if (strComCheckBit == "ODD")
{
strCheckBit = "o";
}
else if (strComCheckBit == "EVEN")
{
strCheckBit = "e";
}
else
{ // NONE
strCheckBit = "n";
}
// 生成参数字符串
CString strRef = "";
strRef.Format("%s,%s,%s,%s", strComBaud, strCheckBit, strComDataBit, strComStopBit);
// 如果串口打开的，先关闭掉
if(m_MSComm.GetPortOpen())
{
m_MSComm.SetPortOpen(false);
}
// 设置串口参数
m_MSComm.SetInputMode(1);
m_MSComm.SetInBufferSize(1024);
m_MSComm.SetOutBufferSize(512);
m_MSComm.SetSettings(strRef);
m_MSComm.SetRThreshold(1);
m_MSComm.SetInputLen(0);
// 打开串口
m_MSComm.SetCommPort(nCom);
if(!m_MSComm.GetPortOpen())
{
m_MSComm.SetPortOpen(true);
MessageBox("串口打开", "提示", MB_ICONINFORMATION);
}
else
{
m_MSComm.SetOutBufferCount(0);
}
}
void CDemoDlg::OnBtnCommClose()
{
// TODO: Add your control notification handler code here
// 关闭串口
if(m_MSComm.GetPortOpen())
{
m_MSComm.SetPortOpen(false);
MessageBox("串口关闭", "提示", MB_ICONINFORMATION);
}
}
void CDemoDlg::OnBtnSend()
{
// TODO: Add your control notification handler code here
// 站号，如：03
CString strNum;
GetDlgItem(IDC_EDIT_STATION_NUM)->GetWindowText(strNum);
// 去除两头的空格
strNum.TrimLeft();
strNum.TrimRight();
// 数据判异
if (strNum.IsEmpty())
{
MessageBox("请输入站号，如：03", "提示", MB_ICONINFORMATION);
return;
}
else if (strNum.GetLength() == 1)
{
strNum = "0" strNum;
}
else if (strNum.GetLength() > 2)
{
strNum = strNum.Right(2);
}
BYTE* pNum = (BYTE*)(LPSTR)(LPCSTR)strNum;
// 发送数据，如读取站号03的测量值：(%,0,3,#,R,M,D,*,*,CR)
CByteArray sendArr;
sendArr.SetSize(10);
sendArr.SetAt(0, '%');
sendArr.SetAt(1, pNum[0]);
sendArr.SetAt(2, pNum[1]);
sendArr.SetAt(3, '#');
sendArr.SetAt(4, 'R');
sendArr.SetAt(5, 'M');
sendArr.SetAt(6, 'D');
sendArr.SetAt(7, '*');
sendArr.SetAt(8, '*');
sendArr.SetAt(9, '\r');
// 向串口发送数据
m_MSComm.SetOutput(COleVariant(sendArr));
}
BEGIN_EVENTSINK_MAP(CDemoDlg, CDialog)
//{{AFX_EVENTSINK_MAP(CDemoDlg)
ON_EVENT(CDemoDlg, IDC_MSCOMM_TEST, 1 /* OnComm */, OnCommMscomm, VTS_NONE)
//}}AFX_EVENTSINK_MAP
END_EVENTSINK_MAP()
void CDemoDlg::OnCommMscomm()
{
// TODO: Add your control notification handler code here
VARIANT variant_inp;
COleSafeArray safearray_inp;
long i = 0;
int len = 0;
unsigned char rxdata[1000];
CString tmp;
// 串口接收数据
switch (m_MSComm.GetCommEvent())
{
case 1: // comEvSend发送数据
break;
case 2: // 表示接收缓冲区内有字符 comEvReceive读取数据
{
// 获取数据
variant_inp = m_MSComm.GetInput();
safearray_inp = variant_inp;
// 获取长度
len = safearray_inp.GetOneDimSize();
// 获取字符
CString strRecvData;
CString strHex;
for (i = 0; i < len; i )
{
safearray_inp.GetElement(&i, &rxdata[i]);
// 转换成16进制文本
strHex.Format("%02X ", rxdata[i]);
strRecvData = strHex;
}
rxdata[i] = '\0';
// 收到的数据，如收到站号03的测量值：(%,0,3,$,R,M,D,-,0,1,2,3,4,5,6,*,*,CR) == -12.3456[mm]
CString strData = rxdata;
// 符号位
CString strSign = strData.Mid(7, 1);
// 整数部分
CString strInt = strData.Mid(8, 3);
int nInt = atoi(strInt);
strInt.Format("%d", nInt);
// 小数部分
CString strDec = strData.Mid(11, 4);
// 组合数据
CString strResult;
if ("-" == strSign)
{ // 负数
strResult = strSign strInt "." strDec "mm";
}
else
{ // 正数
strResult = strInt "." strDec "mm";
}
// 显示测量值
GetDlgItem(IDC_EDIT_RESULT)->SetWindowText(strResult);
}
break;
default:
break;
}
}
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