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心跳检测View.cpp
资源名称：心跳检测.rar　[点击查看]
上传用户：dtengfei
上传日期：2013-01-16
资源大小：393k
文件大小：16k
源码类别：

医药行业

开发平台：

Visual C++

心跳检测View.cpp：源码内容
  1. // 心跳检测View.cpp : implementation of the CMyView class
  2. //
  4. #include "stdafx.h"
  5. #include "心跳检测.h"
  6. #include "math.h"
  8. #include "心跳检测Doc.h"
  9. #include "心跳检测View.h"
  10. #include "Mainfrm.h"
  11. #include <windowsx.h>
  12. #ifdef _DEBUG
  13. #define new DEBUG_NEW
  14. #undef THIS_FILE
  15. static char THIS_FILE[] = __FILE__;
  16. #endif
  18. /////////////////////////////////////////////////////////////////////////////
  19. // CMyView
  21. IMPLEMENT_DYNCREATE(CMyView, CFormView)
  23. BEGIN_MESSAGE_MAP(CMyView, CFormView)
  24. //{{AFX_MSG_MAP(CMyView)
  25. ON_WM_PAINT()
  26. ON_BN_CLICKED(IDC_EXIT, OnExit)
  27. ON_BN_CLICKED(IDC_PRINT, OnMyPrint)
  28. ON_BN_CLICKED(IDC_OPEN, OnOpen)
  29. ON_BN_CLICKED(IDC_SAVE, OnSave)
  30. ON_BN_CLICKED(IDC_STOP, OnStop)
  31. ON_BN_CLICKED(IDC_PLAY, OnPlay)
  32. ON_BN_CLICKED(IDC_REFURBISH, OnRefurbish)
  33. ON_WM_CREATE()
  34. ON_BN_CLICKED(IDC_BITMAP, OnBitmap)
  35. //}}AFX_MSG_MAP
  36. // Standard printing commands
  37. ON_COMMAND(ID_FILE_PRINT, CFormView::OnFilePrint)
  38. ON_COMMAND(ID_FILE_PRINT_DIRECT, CFormView::OnFilePrint)
  39. ON_COMMAND(ID_FILE_PRINT_PREVIEW, CFormView::OnFilePrintPreview)
  40. END_MESSAGE_MAP()
  42. /////////////////////////////////////////////////////////////////////////////
  43. // CMyView construction/destruction
  45. CMyView::CMyView()
  46. : CFormView(CMyView::IDD)
  47. {
  48. //{{AFX_DATA_INIT(CMyView)
  49. m_StartT = 0;
  50. m_EndT = 0;
  51. m_TopE = 0;
  52. m_BottomE = 0;
  53. m_E = _T("");
  54. m_F = _T("");
  55. //}}AFX_DATA_INIT
  56. // TODO: add construction code here
  57. m_TopE=100;
  58. m_EndT=1;
  60.     m_pMemDC=new CDC;
  61. //m_pBitmap=new CBitmap;
  62. }
  64. CMyView::~CMyView()
  65. {
  66. delete m_pMemDC;
  67. //delete m_pBitmap;
  68. }
  70. void CMyView::DoDataExchange(CDataExchange* pDX)
  71. {
  72. CFormView::DoDataExchange(pDX);
  73. //{{AFX_DATA_MAP(CMyView)
  74. DDX_Text(pDX, IDC_START_T, m_StartT);
  75. DDV_MinMaxInt(pDX, m_StartT, 0, 29);
  76. DDX_Text(pDX, IDC_END_T, m_EndT);
  77. DDV_MinMaxInt(pDX, m_EndT, 1, 30);
  78. DDX_Text(pDX, IDC_TOP_E, m_TopE);
  79. DDX_Text(pDX, IDC_BOTTOM_E, m_BottomE);
  80. DDX_Text(pDX, IDC_E, m_E);
  81. DDX_Text(pDX, IDC_F, m_F);
  82. //}}AFX_DATA_MAP
  83. DDX_Control(pDX, IDC_PLAY, m_Play);
  84. DDX_Control(pDX, IDC_STOP, m_Stop);
  85. DDX_Control(pDX, IDC_TRANSACT, m_Transact);
  86. DDX_Control(pDX, IDC_SAVE, m_Save);
  87. DDX_Control(pDX, IDC_OPEN, m_Open);
  88. DDX_Control(pDX, IDC_PRINT, m_Print);
  89. DDX_Control(pDX, IDC_EXIT, m_Exit);
  90. DDX_Control(pDX, IDC_REFURBISH,m_Refurbish);
  91. }
  93. BOOL CMyView::PreCreateWindow(CREATESTRUCT& cs)
  94. {
  95. // TODO: Modify the Window class or styles here by modifying
  96. //  the CREATESTRUCT cs
  98. return CFormView::PreCreateWindow(cs);
  99. }
  101. void CMyView::OnInitialUpdate()
  102. {
  103. CFormView::OnInitialUpdate();
  104. // GetParentFrame()->RecalcLayout();
  105. // ResizeParentToFit();
  109. m_Play.SetIcon(IDI_PLAY);
  110. m_Play.OffsetColor(CButtonST::BTNST_COLOR_BK_IN, 50);
  111. m_Play.DrawFlatFocus(TRUE);
  112. // m_Play.SetTooltipText(_T("开始运行"));
  114. m_Stop.SetIcon(IDI_STOP);
  115. m_Stop.OffsetColor(CButtonST::BTNST_COLOR_BK_IN, 50);
  116. m_Stop.DrawFlatFocus(TRUE);
  118. m_Transact.SetIcon(IDI_TRANSACT);
  119. m_Transact.OffsetColor(CButtonST::BTNST_COLOR_BK_IN, 50);
  120. m_Transact.DrawFlatFocus(TRUE);
  122. m_Save.SetIcon(IDI_SAVE);
  123. m_Save.OffsetColor(CButtonST::BTNST_COLOR_BK_IN, 50);
  124. m_Save.DrawFlatFocus(TRUE);
  126. m_Open.SetIcon(IDI_OPEN);
  127. m_Open.OffsetColor(CButtonST::BTNST_COLOR_BK_IN, 50);
  128. m_Open.DrawFlatFocus(TRUE);
  130. m_Print.SetIcon(IDI_PRINT);
  131. m_Print.OffsetColor(CButtonST::BTNST_COLOR_BK_IN, 50);
  132. m_Print.DrawFlatFocus(TRUE);
  134. m_Exit.SetIcon(IDI_EXIT1,IDI_EXIT);
  135. m_Exit.OffsetColor(CButtonST::BTNST_COLOR_BK_IN, 50);
  136. m_Exit.DrawFlatFocus(TRUE);
  138. m_Refurbish.SetIcon(IDI_REFURBISH1,IDI_REFURBISH);
  139. m_Refurbish.OffsetColor(CButtonST::BTNST_COLOR_BK_IN, 50);
  140. m_Refurbish.DrawFlatFocus(TRUE);
  142. }
  144. /////////////////////////////////////////////////////////////////////////////
  145. // CMyView printing
  147. BOOL CMyView::OnPreparePrinting(CPrintInfo* pInfo)
  148. {
  149. // default preparation
  150. return DoPreparePrinting(pInfo);
  151. }
  153. void CMyView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
  154. {
  155. // TODO: add extra initialization before printing
  156. }
  158. void CMyView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
  159. {
  160. // TODO: add cleanup after printing
  161. }
  163. void CMyView::OnPrint(CDC* pDC, CPrintInfo* /*pInfo*/)
  164. {
  165. // TODO: add customized printing code here
  166. }
  168. /////////////////////////////////////////////////////////////////////////////
  169. // CMyView diagnostics
  171. #ifdef _DEBUG
  172. void CMyView::AssertValid() const
  173. {
  174. CFormView::AssertValid();
  175. }
  177. void CMyView::Dump(CDumpContext& dc) const
  178. {
  179. CFormView::Dump(dc);
  180. }
  182. CMyDoc* CMyView::GetDocument() // non-debug version is inline
  183. {
  184. ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CMyDoc)));
  185. return (CMyDoc*)m_pDocument;
  186. }
  187. #endif //_DEBUG
  189. /////////////////////////////////////////////////////////////////////////////
  190. // CMyView message handlers
  192. void CMyView::OnPaint() 
  193. {
  194. CPaintDC dc(this); // device context for painting
  196. // TODO: Add your message handler code here
  197. CBitmap* pOldBitmap=m_pMemDC->SelectObject(&m_pBitmap);
  198.    //copy the memory DC to show DC
  199. dc.BitBlt(170,50,m_MaxX-150,m_MaxY-50,m_pMemDC,0,0,SRCCOPY);
  201. m_pMemDC->SelectObject(pOldBitmap);
  202. // DrawCordinate(&dc);
  203. // DrawLine(&dc);
  204. // Do not call CFormView::OnPaint() for painting messages
  205. }
  207. void CMyView::OnExit() 
  208. {
  209. // TODO: Add your control notification handler code here
  210. PostMessage(WM_QUIT);
  211. }
  213. void CMyView::OnMyPrint() 
  214. {
  215. // TODO: Add your control notification handler code here
  216. ShellExecute(GetSafeHwnd(),"open","C:\Program Files\office\Office\Winword.exe",NULL,NULL,SW_SHOWNORMAL);
  217. }
  219. void CMyView::OnOpen() 
  220. {
  221. // TODO: Add your control notification handler code here
  222. CFileDialog dlg(TRUE,"dot",NULL,OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT,
  223. "心跳检测数据(*.dot)|*.dot|所有文件(*.*)|*.*||",this);
  224.     if(dlg.DoModal()==IDCANCEL)
  225.  return;
  226. PathName=dlg.GetPathName();
  227. CStdioFile file;
  228. if(file.Open(PathName,CFile::modeRead)==0)
  229. {
  230. MessageBox("打文件"+PathName+"失败!","提示",MB_OK+MB_ICONWARNING);
  231. return;
  232. }
  233. //save the data
  234. Openfile(&file);
  235. //close the file
  236. file.Close();
  237. }
  239. void CMyView::OnSave() 
  240. {
  241. // TODO: Add your control notification handler code here
  242. CFileDialog dlg(FALSE,"dot","未命名",OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT,
  243. "心跳检测数据(*.dot)|*.dot|所有文件(*.*)|*.*||",this);
  244.     if(dlg.DoModal()==IDCANCEL)
  245.  return;
  246. PathName=dlg.GetPathName();
  247. CStdioFile file;
  248. if(file.Open(PathName,CFile::modeCreate|CFile::modeWrite)==0)
  249. {
  250. MessageBox("打文件"+PathName+"失败!","提示",MB_OK+MB_ICONWARNING);
  251. return;
  252. }
  253. //save the data
  254. SaveFile(&file);
  255. //close the file
  257. }
  261. void CMyView::OnStop() 
  262. {
  263. // TODO: Add your control notification handler code here
  264. CMainFrame *m_pFrm=(CMainFrame *)AfxGetMainWnd();
  265. m_pFrm->TP.runing=FALSE;
  266. }
  268. void CMyView::OnPlay() 
  269. {
  270. // TODO: Add your control notification handler code here
  271. CMainFrame *m_pFrm=(CMainFrame *)AfxGetMainWnd();
  272. OnStop();
  273. Sleep(100);
  275. m_pFrm->TP.PointNumber=0;
  277. /* for(int i=0;i<=m_pFrm->TP.WholeNumber;i++)
  278. {
  279. m_pFrm->TP.data[i]=0;
  280. m_pFrm->TP.data1[i]=0;
  281. }
  282. */
  284. /* for(int i=0;i<100;i++)
  285. {
  286. m_pFrm->TP.data[i]=fsimpf(i);
  287. m_pFrm->TP.data1[i]=fsimp(0,i,0.00001);
  288. }
  289. */
  291. m_pFrm->TP.runing=TRUE;
  292. ::PostThreadMessage(m_pFrm->m_JiqiThreadID,WM_CELIANG,long(&m_pFrm->TP),NULL);
  293. }
  295. void CMyView::OnRefurbish() 
  296. {
  297. // TODO: Add your control notification handler code here
  299. }
  301. void CMyView::Draw(int Point)
  302. {
  303. // Invalidate(FALSE);
  304. CMainFrame *m_pFrm=(CMainFrame *)AfxGetMainWnd();
  305. m_E.Format("%3.3f",m_pFrm->TP.data[Point]);
  306. m_F.Format("%3.3f",float(Point));
  307. UpdateData(FALSE);
  309. DrawCordinate();
  310. DrawLine();
  311. }
  314. int CMyView::OnCreate(LPCREATESTRUCT lpCreateStruct) 
  315. {
  316. if (CFormView::OnCreate(lpCreateStruct) == -1)
  317. return -1;
  319. // TODO: Add your specialized creation code here
  320. InitData();
  322. CDC* pDC=GetDC();
  323. m_MaxX=GetSystemMetrics(SM_CXSCREEN);
  324. m_MaxY=GetSystemMetrics(SM_CYSCREEN);
  326. m_pMemDC->CreateCompatibleDC(pDC);
  327. m_pBitmap.CreateCompatibleBitmap(pDC,m_MaxX,m_MaxY);
  329. ReleaseDC(pDC);
  331. DrawCordinate();
  332. return 0;
  333. }
  335. void CMyView::DrawCordinate()
  336. {
  337. CBitmap* pOldBitmap=m_pMemDC->SelectObject(&m_pBitmap);
  338. CString str;
  340. //建立字体
  341. CFont fontBT;
  342. m_FontView.lfHeight=20;
  343. m_FontView.lfEscapement=0;
  344. m_FontView.lfOrientation=0;
  345. fontBT.CreateFontIndirect(&m_FontView);
  347. CFont fontXiao;
  348. m_FontView.lfHeight=15;
  349. fontXiao.CreateFontIndirect(&m_FontView);
  351. CFont* pOldFont=m_pMemDC->SelectObject(&fontBT);
  352. m_pMemDC->SetTextColor(0);
  353. m_pMemDC->SetBkMode(TRANSPARENT);
  355. //填充背景
  356. CBrush *brush;
  357. brush=new CBrush(RGB(255,255,255));
  358. CBrush *pOldBrush=m_pMemDC->SelectObject(brush);
  359.     m_pMemDC->FillRect (CRect(LeftRange,TopRange,m_MaxX,m_MaxY),brush);
  360. //装饰条
  361. CPen pen(PS_SOLID,2, RGB(0,0,0));
  362. CPen *pOldPen=m_pMemDC->SelectObject(&pen);
  364. m_pMemDC->MoveTo(LeftRange, 0);
  365. m_pMemDC->LineTo(LeftRange, 768);
  366. m_pMemDC->MoveTo(LeftRange, TopRange);
  367. m_pMemDC->LineTo(1024, TopRange);
  369. CPen pen1(PS_DOT, 1, RGB(150,150,150));
  370. CPen pen2(PS_SOLID, 1, RGB(0,0,0));
  372. //画刻度
  374.     CRect rect(left,top,right,bottom);
  375.     m_pMemDC->Rectangle(rect);
  377. int i;
  378. //画下坐标
  379. double Xinter,Yinter;
  380. if(m_EndT-m_StartT==1)
  381. {
  382. Xinter=(right-left)/100.0;
  383. m_pMemDC->SelectObject(&pen1);
  384. for(i=1;i<100;i++)
  385. {
  386. m_pMemDC->MoveTo(int(left+i*Xinter),top);
  387. m_pMemDC->LineTo(int(left+i*Xinter),bottom);
  388. }
  389. m_pMemDC->SelectObject(&pen2);
  390. for(i=1;i<10;i++)
  391. {
  392. m_pMemDC->MoveTo(int(left+i*Xinter*10),top);
  393. m_pMemDC->LineTo(int(left+i*Xinter*10),bottom);
  394. }
  395. m_pMemDC->SelectObject(&fontXiao);
  396. for(i=0;i<=10;i++)
  397. {
  398. str.Format("%i",i*100);
  399. m_pMemDC->TextOut(int(left+i*Xinter*10-8),bottom+5,str);
  400. }
  401. }
  402. //画左坐标
  403. Yinter=(bottom-top)/100.0;
  404. m_pMemDC->SelectObject(&pen1);
  405. for(i=1;i<100;i++)
  406. {
  407. if(i/10.0==int(i/10.0))
  408. continue;
  409. m_pMemDC->MoveTo(left,int(top+i*Yinter));
  410. m_pMemDC->LineTo(right,int(top+i*Yinter));
  411. }
  412. m_pMemDC->SelectObject(&pen2);
  413. for(i=1;i<10;i++)
  414. {
  415. m_pMemDC->MoveTo(left,int(top+i*Yinter*10));
  416. m_pMemDC->LineTo(right,int(top+i*Yinter*10));
  417. }
  418. for(i=1;i<=10;i++)
  419. {
  420. str.Format("%i",i*10);
  421. m_pMemDC->TextOut(left-25,int(bottom-i*Yinter*10-8),str);
  422. }
  423. m_pMemDC->SelectObject(pOldBrush);
  424. m_pMemDC->SelectObject(pOldFont);
  425. m_pMemDC->SelectObject(pOldPen);
  426. m_pMemDC->SelectObject(pOldBitmap); 
  427. }
  429. void CMyView::InitData()
  430. {
  431. m_FontView.lfHeight=15;
  432. m_FontView.lfWidth=0;
  433. m_FontView.lfEscapement=0;
  434. m_FontView.lfOrientation=0;
  435. m_FontView.lfWeight=FW_NORMAL;
  436. m_FontView.lfItalic=FALSE;
  437. m_FontView.lfUnderline=FALSE;
  438. m_FontView.lfStrikeOut=FALSE;
  439. m_FontView.lfCharSet=GB2312_CHARSET;
  440. m_FontView.lfOutPrecision=OUT_STROKE_PRECIS;
  441. m_FontView.lfClipPrecision=CLIP_STROKE_PRECIS;
  442. m_FontView.lfQuality=DRAFT_QUALITY;
  443. m_FontView.lfPitchAndFamily=VARIABLE_PITCH|FF_MODERN;
  444. strcpy(m_FontView.lfFaceName,"System");
  446. TopRange=0;
  447. LeftRange=0;
  449. left=LeftRange+40;
  450. right=820;
  451. top=TopRange+20;
  452. bottom=630;
  453. }
  455. void CMyView::DrawLine()
  456. {
  457. CBitmap* pOldBitmap=m_pMemDC->SelectObject(&m_pBitmap);
  458. CMainFrame *m_pFrm=(CMainFrame *)AfxGetMainWnd();
  459. CPen pen1(PS_SOLID, 1, RGB(255,0,0));
  460. CPen *pOldPen = m_pMemDC->SelectObject(&pen1);
  462. double Xinter,Yinter;
  463. Xinter=(right-left)/float(m_pFrm->TP.WholeNumber);
  464. Yinter=(bottom-top)/100.0;
  466. /*
  467. for(int i=1;i<=m_pFrm->TP.PointNumber;i++)
  468. {
  469. int e1=int(bottom-m_pFrm->TP.data[i-1]*Yinter);
  470. int e2=int(bottom-m_pFrm->TP.data[i]*Yinter);
  471. if(e1<top) e1=top;
  472. if(e1>bottom) e1=bottom;
  473. if(e2<top) e2=top;
  474. if(e2>bottom) e2=bottom;
  475. m_pMemDC->MoveTo(int(left+(i-1)*Xinter),e1);
  476. m_pMemDC->LineTo(int(left+i*Xinter),e2);
  477. }
  478. */
  479. for(int i=1;i<m_pFrm->TP.PointNumber;i++)
  480. {
  481. int e1=int(bottom-m_pFrm->TP.data[i-1]*Yinter);
  482. int e2=int(bottom-m_pFrm->TP.data[i]*Yinter);
  483. int e3=int(bottom-m_pFrm->TP.data1[i-1]*Yinter);
  484. int e4=int(bottom-m_pFrm->TP.data1[i]*Yinter);
  486. m_pMemDC->MoveTo(int(left+(i-1)*Xinter),e1);
  487. m_pMemDC->LineTo(int(left+i*Xinter),e2);
  489. m_pMemDC->MoveTo(int(left+(i-1)*Xinter),e3);
  490. m_pMemDC->LineTo(int(left+i*Xinter),e4);
  492. }
  495. m_pMemDC->SelectObject(pOldPen);
  496. m_pMemDC->SelectObject(pOldBitmap); 
  497. Invalidate(FALSE);
  498. }
  499. void CMyView::SaveFile(CStdioFile *file)
  500. {
  501. CMainFrame *m_pFrm=(CMainFrame *)AfxGetMainWnd();
  502. CString mStr;
  503. for(int i=0;i<m_pFrm->TP.PointNumber;i++)
  504. {
  505. if(m_pFrm->TP.data[i]<0)
  506. break;
  507. }
  508. mStr.Format("采集点共:%dn",i);
  509. file->WriteString(mStr);
  510. for(int j=0;j<i;j++)
  511. {
  512. mStr.Format("采集点%d:%3.4fn",j,m_pFrm->TP.data[j]);
  513. file->WriteString(mStr);
  514. }
  515. }
  516. void CMyView::Openfile(CStdioFile *file)
  517. {
  518. CMainFrame *m_pFrm=(CMainFrame *)AfxGetMainWnd();
  519. CString mStr;
  520. int j;
  521. CEdit* pEdit;
  522. CString str;
  524. file->ReadString(mStr);
  525. j=mStr.Find(":",0)+1;
  526. mStr=mStr.Right(mStr.GetLength()-j);
  527. pEdit=(CEdit *)GetDlgItem(IDC_F);
  528. pEdit->SetSel(0,-1);
  529. pEdit->ReplaceSel(mStr);
  531. m_pFrm->TP.PointNumber=atoi(mStr)-1;
  532. str=mStr;
  534. int i;
  535. for(i=0;i<atoi(str);i++)
  536. {
  537. file->ReadString(mStr);
  538. j=mStr.Find(":",0)+1;
  539. mStr=mStr.Right(mStr.GetLength()-j);
  540. m_pFrm->TP.data[i]=atof(mStr);
  541. }
  543. DrawCordinate();
  544. DrawLine();
  546. /* file->Seek(-15,CFile::end);
  547. file->ReadString(mStr);
  548. j=mStr.Find(":",0)+1;
  549. mStr=mStr.Right(mStr.GetLength()-j);
  550. pEdit=(CEdit *)GetDlgItem(IDC_E);
  551. pEdit->SetSel(0,-1);
  552. pEdit->ReplaceSel(mStr);
  553. */
  554. }
  557. void CMyView::OnBitmap() 
  558. {
  559. // TODO: Add your control notification handler code here
  560. CClientDC dc(this);
  561. BITMAP btm;
  562. m_pBitmap.GetBitmap(&btm);
  563. DWORD size=btm.bmWidthBytes*btm.bmHeight;//bmWidthBytes每条扫描线字节数
  564. LPSTR lpData=(LPSTR)GlobalAllocPtr(GPTR,size);
  565. /////////////////////////////////////////////
  566. BITMAPINFOHEADER bih;
  567. bih.biBitCount=btm.bmBitsPixel;//每个象素的位数0代表JPEG格式或被指定
  568. bih.biClrImportant=0;//显示位图时所需要的颜色数，若为0则需要所有的颜色数
  569. bih.biClrUsed=0;//指定颜色表中位图所用道的颜色索引数若为0则取最大值
  570. bih.biCompression=0;//压缩格式0指的是未压缩
  571. bih.biHeight=btm.bmHeight;//位图高
  572. bih.biPlanes=1;//必须为一
  573. bih.biSize=sizeof(BITMAPINFOHEADER);//这种结构的大小
  574. bih.biSizeImage=size;//位图大小的字节数
  575. bih.biWidth=btm.bmWidth;//位图宽
  576. bih.biXPelsPerMeter=0;//X方向每米所规定的象素方式
  577. bih.biYPelsPerMeter=0;//
  578. ///////////////////////////////////
  579. GetDIBits(dc,m_pBitmap,0,bih.biHeight,lpData,(BITMAPINFO*)&bih,DIB_RGB_COLORS);
  581. /////////////////////////////////////////////
  582. BITMAPFILEHEADER bfh;
  583. bfh.bfReserved1=bfh.bfReserved2=0;
  584. bfh.bfType=((WORD)('M'<< 8)|'B');
  585. bfh.bfSize=54+size;
  586. bfh.bfOffBits=54;
  587. /////////////////////////////////////////////
  588. CFile bf;
  589. CFileDialog dlg(FALSE,"txt","未命名",OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT,
  590. "心跳检测数据(*.bmp)|*.bmp|所有文件(*.*)|*.*||",this);
  591.     if(dlg.DoModal()==IDCANCEL)
  592.  return;
  593. CString name;
  594. name=dlg.GetPathName();
  595. if(bf.Open(name,CFile::modeCreate|CFile::modeWrite))
  596. {
  597. bf.WriteHuge(&bfh,sizeof(BITMAPFILEHEADER));
  598. bf.WriteHuge(&bih,sizeof(BITMAPINFOHEADER));
  599. bf.WriteHuge(lpData,size);
  600. bf.Close();
  602. }
  603. GlobalFreePtr(lpData);
  604. }
  607. double CMyView::fsimpf(double x)
  608. {
  609. double y;
  610.  //   y=log(1.0+x)/(1.0+x*x);
  612. // y=sin(x/50.0);
  613. y=sin(x/10);
  614.     return(y);
  615. }
  617. double CMyView::fsimp(double a, double b, double eps)
  618. {
  619.     int n,k;
  620.     double h,t1,t2,s1,s2,ep,p,x;
  621.     n=1; h=b-a;
  622.     t1=h*(fsimpf(a)+fsimpf(b))/2.0;  /*用梯形公式求出一个大概的估值*/
  623.     s1=t1;
  624.     ep=eps+1.0;
  625.     while (ep>=eps)
  626. {
  627. /*用梯形法则计算*/
  628. p=0.0;
  629. for (k=0;k<=n-1;k++)
  630. {
  631. x=a+(k+0.5)*h;
  632. p=p+fsimpf(x);
  633. }
  634. t2=(t1+h*p)/2.0;
  635. /*用辛普森公式求精*/
  636. s2=(4.0*t2-t1)/3.0;
  637. ep=fabs(s2-s1);
  638. t1=t2; s1=s2; n=n+n; h=h/2.0;
  639. }
  640.     return(s2);
  641. }