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NTGraph控件绘图

分类： C/C++

2015-10-17 19:41:27


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  1. // vc_netGraphDlg.cpp : implementation file
  2. //

  4. #include "stdafx.h"
  5. #include "vc_netGraph.h"
  6. #include "vc_netGraphDlg.h"
  7. #include "math.h"
  8. #include <windows.h>

  10. #ifdef _DEBUG
  11. #define new DEBUG_NEW
  12. #undef THIS_FILE
  13. static char THIS_FILE[] = __FILE__;
  14. #endif



  18. CRITICAL_SECTION g_cs;
  19. CString strComPort;
  20. CString strComBaud;
  21. BOOL bComIsopen=FALSE;
  22. float xstart=0;

  24. /////////////////////////////////////////////////////////////////////////////
  25. // CAboutDlg dialog used for App About

  27. class CAboutDlg : public CDialog
  28. {
  29. public:
  30.     CAboutDlg();

  32. // Dialog Data
  33.     //{{AFX_DATA(CAboutDlg)
  34.     enum { IDD = IDD_ABOUTBOX };
  35.     //}}AFX_DATA

  37.     // ClassWizard generated virtual function overrides
  38.     //{{AFX_VIRTUAL(CAboutDlg)
  39.     protected:
  40.     virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support
  41.     //}}AFX_VIRTUAL

  43. // Implementation
  44. protected:
  45.     //{{AFX_MSG(CAboutDlg)
  46.     //}}AFX_MSG
  47.     DECLARE_MESSAGE_MAP()
  48. };

  50. CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
  51. {
  52.     //{{AFX_DATA_INIT(CAboutDlg)
  53.     //}}AFX_DATA_INIT
  54. }

  56. void CAboutDlg::DoDataExchange(CDataExchange* pDX)
  57. {
  58.     CDialog::DoDataExchange(pDX);
  59.     //{{AFX_DATA_MAP(CAboutDlg)
  60.     //}}AFX_DATA_MAP
  61. }

  63. BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
  64.     //{{AFX_MSG_MAP(CAboutDlg)
  65.         // No message handlers
  66.     //}}AFX_MSG_MAP
  67. END_MESSAGE_MAP()

  69. /////////////////////////////////////////////////////////////////////////////
  70. // CVc_netGraphDlg dialog

  72. CVc_netGraphDlg::CVc_netGraphDlg(CWnd* pParent /*=NULL*/)
  73.     : CDialog(CVc_netGraphDlg::IDD, pParent)
  74. {
  75.     //{{AFX_DATA_INIT(CVc_netGraphDlg)
  76.     //}}AFX_DATA_INIT
  77.     // Note that LoadIcon does not require a subsequent DestroyIcon in Win32
  78.     m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
  79. }

  81. void CVc_netGraphDlg::DoDataExchange(CDataExchange* pDX)
  82. {
  83.     CDialog::DoDataExchange(pDX);
  84.     //{{AFX_DATA_MAP(CVc_netGraphDlg)
  85.     DDX_Control(pDX, IDC_NTGRAPHCTRL1, m_Graph);
  86.     //}}AFX_DATA_MAP
  87. }

  89. BEGIN_MESSAGE_MAP(CVc_netGraphDlg, CDialog)
  90.     //{{AFX_MSG_MAP(CVc_netGraphDlg)
  91.     ON_WM_SYSCOMMAND()
  92.     ON_WM_PAINT()
  93.     ON_WM_QUERYDRAGICON()
  94.     ON_BN_CLICKED(IDC_BUTTON_COMOPEN, OnButtonComopen)
  95.     ON_MESSAGE(WM_USERMSG,OnMsg)
  96.     //}}AFX_MSG_MAP
  97. END_MESSAGE_MAP()

  99. /////////////////////////////////////////////////////////////////////////////
  100. // CVc_netGraphDlg message handlers

  102. BOOL CVc_netGraphDlg::OnInitDialog()
  103. {
  104.     CDialog::OnInitDialog();

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

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

  112.     CMenu* pSysMenu = GetSystemMenu(FALSE);
  113.     if (pSysMenu != NULL)
  114.     {
  115.         CString strAboutMenu;
  116.         strAboutMenu.LoadString(IDS_ABOUTBOX);
  117.         if (!strAboutMenu.IsEmpty())
  118.         {
  119.             pSysMenu->AppendMenu(MF_SEPARATOR);
  120.             pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
  121.         }
  122.     }
  123.     ((CComboBox *)GetDlgItem(IDC_COMBO_COMPORT))->InsertString(0,"COM1");
  124.     ((CComboBox *)GetDlgItem(IDC_COMBO_COMPORT))->InsertString(1,"COM2");
  125.     ((CComboBox *)GetDlgItem(IDC_COMBO_COMPORT))->InsertString(2,"COM3");
  126.     ((CComboBox *)GetDlgItem(IDC_COMBO_COMPORT))->InsertString(3,"COM4");
  127.     ((CComboBox *)GetDlgItem(IDC_COMBO_COMPORT))->InsertString(4,"COM5");
  128.     ((CComboBox *)GetDlgItem(IDC_COMBO_COMPORT))->InsertString(5,"COM6");
  129.     ((CComboBox *)GetDlgItem(IDC_COMBO_COMPORT))->InsertString(6,"COM7");
  130.     ((CComboBox *)GetDlgItem(IDC_COMBO_COMPORT))->InsertString(7,"COM8");
  131.     ((CComboBox *)GetDlgItem(IDC_COMBO_COMPORT))->InsertString(8,"COM9");
  132.     ((CComboBox *)GetDlgItem(IDC_COMBO_COMPORT))->SetCurSel(3);
  133. //    ((CComboBox *)GetDlgItem(IDC_COMBO_COMPORT))->SetCurSel(0);

  135.     ((CComboBox *)GetDlgItem(IDC_COMBO_COMBAUD))->InsertString(0,"2400");
  136.     ((CComboBox *)GetDlgItem(IDC_COMBO_COMBAUD))->InsertString(1,"4800");
  137.     ((CComboBox *)GetDlgItem(IDC_COMBO_COMBAUD))->InsertString(2,"9600");
  138.     ((CComboBox *)GetDlgItem(IDC_COMBO_COMBAUD))->InsertString(3,"19200");
  139.     ((CComboBox *)GetDlgItem(IDC_COMBO_COMBAUD))->InsertString(4,"38400");
  140.     ((CComboBox *)GetDlgItem(IDC_COMBO_COMBAUD))->InsertString(5,"115200");
  141.     ((CComboBox *)GetDlgItem(IDC_COMBO_COMBAUD))->SetCurSel(5);

  143. #define RED        RGB(0XCD,0X33,0X33)
  144. #define YELLOW        RGB(0X8B,0X00,0X00)
  145. #define PURPLE        RGB(0X4B,0X00,0X82)
  146. #define BLACK        RGB(0X2B,0X2B,0X2B)
  147. #define     BLUE RGB(0X00,0X00,0XEE)
  148. #define     ZS            RGB(0X8B,0X45,0X13)
  149.     m_Graph.ClearGraph();

  151.     m_Graph.SetElementLineColor(RED);
  152.     m_Graph.SetElementWidth(2);
  153.     m_Graph.AddElement();
  154.     m_Graph.SetElementLineColor(YELLOW);
  155.     m_Graph.SetElementWidth(2);
  156.     m_Graph.AddElement();
  157.     m_Graph.SetElementLineColor(PURPLE);
  158.     m_Graph.SetElementWidth(2);
  159.     m_Graph.AddElement();
  160.     m_Graph.SetElementLineColor(BLACK);
  161.     m_Graph.SetElementWidth(2);
  162.     m_Graph.AddElement();
  163.     m_Graph.SetElementLineColor(BLUE);
  164.     m_Graph.SetElementWidth(2);
  165.     m_Graph.AddElement();
  166.     m_Graph.SetElementLineColor(ZS);
  167.     m_Graph.SetElementWidth(2);

  169.     m_Graph.SetElementIdentify(FALSE);
  170.     m_Graph.SetShowGrid(TRUE);
  171.     m_Graph.SetXGridNumber(10);
  172.     m_Graph.SetYGridNumber(10);



  176.     //m_Graph.SetCaption("超好用的图形控件");
  177.     m_Graph.SetXLabel("X轴");
  178.     m_Graph.SetYLabel("Y轴");

  180.     m_Graph.SetRange (0,500,-360,360);

  182.     m_Graph.SetPlotAreaColor(0x006400);//0x006400
  183.     bComIsopen=FALSE;
  184.     SetIcon(m_hIcon, TRUE);            // Set big icon
  185.     SetIcon(m_hIcon, FALSE);        // Set small icon
  186.     
  187.     InitializeCriticalSection(&m_cs);
  188.     // TODO: Add extra initialization here
  189.     
  190.     return TRUE; // return TRUE unless you set the focus to a control
  191. }


  194. void CVc_netGraphDlg::OnMsg()
  195. {
  196.     static DWORD dwcnt=0;
  197.     dwcnt++;
  198.     CString str;
  199.     str.Format("%d",dwcnt);
  200.     GetDlgItem(IDC_STATIC_MSG)->SetWindowText(str);
  201. }

  203. void CVc_netGraphDlg::NetGraph_Init()
  204. {
  205.         m_Graph.ClearGraph();

  207.     m_Graph.SetElementLineColor(RED);
  208.     m_Graph.SetElementWidth(2);
  209.     m_Graph.AddElement();
  210.     m_Graph.SetElementLineColor(YELLOW);
  211.     m_Graph.SetElementWidth(2);
  212.     m_Graph.AddElement();
  213.     m_Graph.SetElementLineColor(PURPLE);
  214.     m_Graph.SetElementWidth(2);
  215.     m_Graph.AddElement();
  216.     m_Graph.SetElementLineColor(BLACK);
  217.     m_Graph.SetElementWidth(2);
  218.     m_Graph.AddElement();
  219.     m_Graph.SetElementLineColor(BLUE);
  220.     m_Graph.SetElementWidth(2);
  221.     m_Graph.AddElement();
  222.     m_Graph.SetElementLineColor(ZS);
  223.     m_Graph.SetElementWidth(2);

  225.     m_Graph.SetElementIdentify(FALSE);
  226.     m_Graph.SetShowGrid(TRUE);
  227.     m_Graph.SetXGridNumber(10);
  228.     m_Graph.SetYGridNumber(10);



  232.     //m_Graph.SetCaption("超好用的图形控件");
  233.     m_Graph.SetXLabel("X轴");
  234.     m_Graph.SetYLabel("Y轴");

  236.     m_Graph.SetRange (0,500,-360,360);

  238.     m_Graph.SetPlotAreaColor(0x006400);//0x006400    
  239. }
  240. void CVc_netGraphDlg::OnSysCommand(UINT nID, LPARAM lParam)
  241. {
  242.     if ((nID & 0xFFF0) == IDM_ABOUTBOX)
  243.     {
  244.         CAboutDlg dlgAbout;
  245.         dlgAbout.DoModal();
  246.     }
  247.     else
  248.     {
  249.         CDialog::OnSysCommand(nID, lParam);
  250.     }
  251. }

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

  257. void CVc_netGraphDlg::OnPaint()
  258. {
  259.     if (IsIconic())
  260.     {
  261.         CPaintDC dc(this); // device context for painting

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

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

  273.         // Draw the icon
  274.         dc.DrawIcon(x, y, m_hIcon);
  275.     }
  276.     else
  277.     {
  278.         CDialog::OnPaint();
  279.     }
  280. }
  281. WORD getCRC16(volatile BYTE *ptr,BYTE len)
  282. {
  283.     unsigned char i;
  284.     unsigned short crc = 0xFFFF;
  285.     if(len==0)
  286.     {
  287.         len = 1;
  288.     }
  289.     while(len--)
  290.     {
  291.         crc ^= *ptr;
  292.         for(i=0; i<8; i++)
  293.         {
  294.             if(crc&1)
  295.             {
  296.                 crc >>= 1;
  297.                 crc ^= 0xA001;
  298.             }
  299.             else
  300.             {
  301.                 crc >>= 1;
  302.             }
  303.         }
  304.         ptr++;
  305.     }
  306.     return(crc);
  307. }
  308. // The system calls this to obtain the cursor to display while the user drags
  309. // the minimized window.
  310. HCURSOR CVc_netGraphDlg::OnQueryDragIcon()
  311. {
  312.     return (HCURSOR) m_hIcon;
  313. }
  314. int EnumAllCommPort(CString* pStr)
  315. {
  316.         int i = 0;
  317.         CHAR Name[25];
  318.         UCHAR szPortName[25];
  319.         LONG Status;
  320.         DWORD dwIndex = 0;
  321.         DWORD dwName;
  322.         DWORD dwSizeofPortName;
  323.         DWORD Type;
  324.         HKEY hKey;
  325.         LPCTSTR data_Set = "HARDWARE\\DEVICEMAP\\SERIALCOMM\\";
  326.         long ret0 = (::RegOpenKeyEx(HKEY_LOCAL_MACHINE, data_Set, 0, KEY_READ, &hKey));

  328.         do
  329.         {
  330.                 dwName = sizeof(Name);
  331.                 dwSizeofPortName = sizeof(szPortName);
  332.                 Status = RegEnumValue(hKey, dwIndex++, Name, &dwName, NULL, &Type,
  333.                         szPortName, &dwSizeofPortName);

  335.                 if ((Status == ERROR_SUCCESS) || (Status == ERROR_MORE_DATA))
  336.                 {
  337.                         pStr[i] = CString(szPortName); // 串口字符串保存
  338.                         i++;// 串口计数
  339.                 }
  340.         }
  341.         while ((Status == ERROR_SUCCESS) || (Status == ERROR_MORE_DATA));

  343.         RegCloseKey(hKey);
  344.         return i;
  345. }
  346. UINT CVc_netGraphDlg::ThreadComReceive(void *param)
  347. {

  349.     CVc_netGraphDlg *dlg=(CVc_netGraphDlg *)param;
  350.     CListBox *list=(CListBox *)dlg->GetDlgItem(IDC_LIST_COMRX);

  352.     DWORD dwComRxLength;
  353.     COMSTAT ComStat;
  354.     DWORD dwErrFlags;
  355.     CString sTmp,sComRecv;
  356.     BYTE lpbuf[1000];
  357.     static DWORD dwLoop=0;
  358.     memset(lpbuf,0,1000);
  359.     if (dlg->m_hcom!=NULL)
  360.     {
  361.         PurgeComm(dlg->m_hcom,PURGE_RXCLEAR | PURGE_TXCLEAR | PURGE_RXABORT | PURGE_TXABORT);
  362.     }
  363.     while (TRUE)
  364.     {
  365.         Sleep(1);
  366.         //EnterCriticalSection(&dlg->m_cs);
  367.         ClearCommError(dlg->m_hcom,&dwErrFlags,&ComStat);
  368.         //LeaveCriticalSection(&dlg->m_cs);

  370.         if (ComStat.cbInQue==0)
  371.         {
  372.             //beak out when byte have been read
  373.             continue;
  374.         }
  375.         dwComRxLength=min(ComStat.cbInQue,210);
  376.         ReadFile(dlg->m_hcom,lpbuf,dwComRxLength,&dwComRxLength,NULL);
  377.         sComRecv="";
  378.         sTmp="";
  379.         if (dwComRxLength>=21)
  380.         {
  381.             for (dwLoop=0;dwLoop<dwComRxLength;dwLoop++)
  382.             {
  383.                 sTmp.Format("%02x ",lpbuf[dwLoop]);
  384.                 sComRecv+=sTmp;

  386.             }
  387.             WORD wCrcCalc=getCRC16(lpbuf,19);
  388.             WORD wCrcGet=(lpbuf[20]<<8) | (lpbuf[19]);
  389.             if (wCrcGet!=wCrcCalc)
  390.             {
  391.                 continue;
  392.             }
  393.             static short sAccelLatch;
  394.         
  395.             dlg->m_GyroX= (lpbuf[7]<<8) | (lpbuf[8]);
  396.             dlg->m_GyroY= (lpbuf[9]<<8) | (lpbuf[10]);
  397.             dlg->m_GyroZ= (lpbuf[11]<<8) | (lpbuf[12]);
  398.             dlg->m_AccelX=(lpbuf[13]<<8) | (lpbuf[14]);
  399.             dlg->m_AccelY=(lpbuf[15]<<8) | (lpbuf[16]);
  400.             dlg->m_AccelZ=(lpbuf[17]<<8) | (lpbuf[18]);
  401.             CString strTmp;
  402.             //显示x轴角度
  403.             strTmp.Format("%d",dlg->m_AccelX);
  404.             dlg->GetDlgItem(IDC_EDIT_ACCELX)->SetWindowText(strTmp);
  405.             strTmp.Format("%d",dlg->m_AccelY);
  406.             dlg->GetDlgItem(IDC_EDIT_ACCELY)->SetWindowText(strTmp);
  407.             strTmp.Format("%d",dlg->m_AccelZ);
  408.             dlg->GetDlgItem(IDC_EDIT_ACCELZ)->SetWindowText(strTmp);
  409.             strTmp.Format("%d",dlg->m_GyroX);
  410.             dlg->GetDlgItem(IDC_EDIT_GYROX)->SetWindowText(strTmp);
  411.             strTmp.Format("%d",dlg->m_GyroY);
  412.             dlg->GetDlgItem(IDC_EDIT_GYROY)->SetWindowText(strTmp);
  413.             strTmp.Format("%d",dlg->m_GyroZ);
  414.             dlg->GetDlgItem(IDC_EDIT_GYROZ)->SetWindowText(strTmp);
  415.             if(xstart>2000)
  416.             {
  417.                 xstart=0;
  418.                 dlg->m_Graph.ClearGraph();
  419.                 dlg->m_Graph.SetElementLineColor(RED);
  420.                 dlg->m_Graph.AddElement();
  421.                 dlg->m_Graph.SetElementLineColor(YELLOW);
  422.                 dlg->m_Graph.AddElement();
  423.                 dlg->m_Graph.SetElementLineColor(PURPLE);
  424.                 dlg->m_Graph.AddElement();
  425.                 dlg->m_Graph.SetElementLineColor(BLACK);
  426.                 dlg->m_Graph.AddElement();
  427.                 dlg->m_Graph.SetElementLineColor(BLUE);
  428.                 dlg->m_Graph.AddElement();
  429.                 dlg->m_Graph.SetElementLineColor(ZS);

  431.                 dlg->m_Graph.SetRange(0,500,-360,360);
  432.         
  433.             }

  435.             //向主线程发送消息
  436.             ::SendMessage(dlg->GetSafeHwnd(),WM_USERMSG,0,0);
  437.             //::SendMessage()
  438.             if (xstart>500)
  439.             {
  440.                 dlg->m_Graph.SetRange(xstart-500,xstart,-360,360);
  441.             }
  442.             double fHBFilter = dlg->m_AccelX + (((sAccelLatch-dlg->m_AccelX)*0.9 + dlg->m_GyroY)*0.01);
  443.             sAccelLatch=dlg->m_AccelX;
  444.     
  445.             if (((CButton *)dlg->GetDlgItem(IDC_CHECK_ACCELX))->GetCheck())
  446.             {
  447.                 dlg->m_Graph.PlotXY(xstart, dlg->m_AccelX,0);
  448.             }
  449.             if (((CButton *)dlg->GetDlgItem(IDC_CHECK_ACCELY))->GetCheck())
  450.             {
  451.                 dlg->m_Graph.PlotXY(xstart, dlg->m_AccelY,1);
  452.             }
  453.             if (((CButton *)dlg->GetDlgItem(IDC_CHECK_ACCELZ))->GetCheck())
  454.             {
  455.                 //dlg->m_Graph.PlotXY(x, dlg->m_AccelZ,2);
  456.                 dlg->m_Graph.PlotXY(xstart, fHBFilter,2);
  457.             }
  458.             if (((CButton *)dlg->GetDlgItem(IDC_CHECK_GYROX))->GetCheck())
  459.             {
  460.                 dlg->m_Graph.PlotXY(xstart, dlg->m_GyroX,3);
  461.             }
  462.             if (((CButton *)dlg->GetDlgItem(IDC_CHECK_GYROY))->GetCheck())
  463.             {
  464.                 dlg->m_Graph.PlotXY(xstart, dlg->m_GyroY,4);
  465.             }
  466.             if (((CButton *)dlg->GetDlgItem(IDC_CHECK_GYROZ))->GetCheck())
  467.             {
  468.                 dlg->m_Graph.PlotXY(xstart, dlg->m_GyroZ,5);
  469.             }
  470.             //dlg->m_Graph.PlotXY(x, fHBFilter,2);
  471.         //    EnterCriticalSection(&g_cs);
  472.         //    LeaveCriticalSection(&g_cs);
  473.             xstart=xstart+2;
  474.             
  475.             
  476.         
  477.         
  478.         
  479.             //在编辑框显示当前接收到的数据帧
  480.             dlg->GetDlgItem(IDC_EDIT_COMRX)->SetWindowText(sComRecv);
  481.             //将当前接收到的数据帧添加到列表框中
  482.             list->InsertString(list->GetCount(),sComRecv);

  484.             if(list->GetCount()>=200)
  485.                 list->ResetContent();

  487.             list->SetCurSel(list->GetCount()-1);

  489.             
  490.         }
  491.         
  492.     
  493.     }
  494.     /*
  495.     CProgressCtrl *prg=(CProgressCtrl *)param;

  497.     
  498.     for (int x=0;x<10;x++)
  499.     {
  500.         prg->StepIt();
  501.         Sleep(500);
  502.     }
  503.     */
  504.     return TRUE;
  505. }

  507. void CVc_netGraphDlg::OnButtonComopen()
  508. {
  509.     // TODO: Add your control notification handler code here
  510.     int i=0;
  511.     char szTmp[200];
  512.     CString sComPort,sComBaud;
  513.     CComboBox *box1=((CComboBox *)GetDlgItem(IDC_COMBO_COMPORT));
  514.     box1->GetLBText(box1->GetCurSel(),sComPort);
  515.     CComboBox *box2=((CComboBox *)GetDlgItem(IDC_COMBO_COMBAUD));
  516.     box2->GetLBText(box2->GetCurSel(),sComBaud);
  517. ///    ((CEdit *)GetDlgItem(IDC_EDIT_TESTBAUD))->SetWindowText(strComBaud);
  518.     if (bComIsopen==FALSE)
  519.     {
  520.         bComIsopen=TRUE;
  521.         m_hcom=CreateFile(sComPort,GENERIC_WRITE | GENERIC_READ,0,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);
  522.         if (m_hcom==(HANDLE)-1)
  523.         {
  524.             m_hcom=NULL;
  525.             AfxMessageBox("串口无效或者被占用");
  526.             return;    
  527.         }
  528.         DWORD dwComPort,dwComBaud;
  529.         strcpy(szTmp,sComPort);
  530.         i=atoi(szTmp+3);
  531.         dwComPort=(DWORD)i;
  532.     
  533.         strcpy(szTmp,sComBaud);
  534.         i=atoi(szTmp);
  535.         dwComBaud=(DWORD)i;

  537.         GetCommState(m_hcom,&dcb);
  538.         dcb.BaudRate=dwComBaud;
  539.         dcb.ByteSize=8;
  540.         dcb.Parity=NOPARITY;//NOPARITY EVENPARITY
  541.         dcb.StopBits=ONESTOPBIT;
  542.         SetCommState(m_hcom,&dcb);
  543.         SetupComm(m_hcom,1024,1024);
  544.         dwComtimeouts.ReadIntervalTimeout=200;
  545.         dwComtimeouts.ReadTotalTimeoutConstant=100;
  546.         dwComtimeouts.ReadTotalTimeoutMultiplier=5000;
  547.         dwComtimeouts.WriteTotalTimeoutConstant=1000;
  548.         dwComtimeouts.WriteTotalTimeoutMultiplier=5000;
  549.         SetCommTimeouts(m_hcom,&dwComtimeouts);
  550.         PurgeComm(m_hcom,PURGE_RXCLEAR | PURGE_TXCLEAR | PURGE_TXABORT | PURGE_RXABORT);
  551.         //PurgeComm(m_hcom,PURGE_RXCLEAR | PURGE_TXCLEAR);
  552.         xstart=0;
  553.         NetGraph_Init();
  554.         AfxBeginThread(ThreadComReceive,this);
  555.         GetDlgItem(IDC_BUTTON_COMOPEN)->SetWindowText("断开");
  556.     
  557.     }
  558.     else
  559.     {
  560.     //    EnterCriticalSection(&m_cs);//临界区锁定共享资源
  561.         //    m_Graph.ClearGraph();
  562.         bComIsopen=FALSE;
  563.         ////SetEvent(m_hShutdownEvent);
  564.         GetDlgItem(IDC_BUTTON_COMOPEN)->SetWindowText("打开");
  565.         TerminateThread(ThreadComReceive,0);//关闭线程
  566.         if (m_hcom!=NULL)
  567.         {
  568.             CloseHandle(m_hcom);
  569.             m_hcom=NULL;
  570.         }    
  571.         
  572.     //    LeaveCriticalSection(&m_cs);//解锁
  573.     }
  574.     
  575. }


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