implement_dyncreate使用c预言实现jpeg 图像格式的读取与写入

implement_dyncreate  时间:2021-06-29  阅读:()

类重复定义了vc98mfcincludeafxwin.h(3703) : error C2011: 'CScrollView' : 'class' type redefinitio

afxwin.h 应当含在 StdAfx.h 里,不要在别处另外定义。

CxxxView.cpp 里 #include "stdafx.h" 放在第一个。

CxxxView.cpp 里 用到 CScrollView 例如: IMPLEMENT_DYNCREATE(CXxxView, CScrollView) BEGIN_MESSAGE_MAP(CXxxView, CScrollView) ON_COMMAND(ID_FILE_PRINT, CScrollView::OnFilePrint) ... END_MESSAGE_MAP()

MFC实现和windows画图工具

我只会写简单的操作,给你做个参考吧 // DrawView.cpp : implementation of the CDrawView class // #include "stdafx.h" #include "Draw.h" #include "DrawDoc.h" #include "DrawView.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif ///////////////////////////////////////////////////////////////////////////// // CDrawView IMPLEMENT_DYNCREATE(CDrawView, CView) BEGIN_MESSAGE_MAP(CDrawView, CView) //{{AFX_MSG_MAP(CDrawView) ON_WM_CREATE() ON_COMMAND(ID_DRAW_LINECOLOR, OnDrawLinecolor) ON_COMMAND(ID_DRAW_FILLCOLOR, OnDrawFillcolor) ON_WM_LBUTTONUP() ON_WM_MOUSEMOVE() ON_WM_LBUTTONDOWN() ON_WM_SETCURSOR() //}}AFX_MSG_MAP ON_COMMAND_RANGE(ID_DRAW_LINE,ID_DRAW_FILL, OnSelectDrawType) ON_UPDATE_COMMAND_UI_RANGE(ID_DRAW_LINE,ID_DRAW_FILL, OnUpdateSelectDrawType) ON_COMMAND_RANGE(ID_DRAW_LINEWIDTH_ONE,ID_DRAW_LINEWIDTH_FIVE, OnDrawLineWidth) ON_UPDATE_COMMAND_UI_RANGE(ID_DRAW_LINEWIDTH_ONE,ID_DRAW_LINEWIDTH_FIVE,OnUpdateDrawLineWidth) // Standard mands ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint) ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint) ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview) END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CDrawView construction/destruction CDrawView::CDrawView() { // TODO: add construction code here m_pMemDC = new CDC; m_pBitmap = new CBitmap; m_nDrawType = -1; m_nLineWidth = 1; m_cLineColor = RGB(0,0,0); m_cFillColor = RGB(0,0,255); m_bDrawing = false; } CDrawView::~CDrawView() { delete m_pMemDC; delete m_pBitmap; } BOOL CDrawView::PreCreateWindow(CREATESTRUCT& cs) { // TODO: Modify the Window class or styles here by modifying // the CREATESTRUCT cs return CView::PreCreateWindow(cs); } ///////////////////////////////////////////////////////////////////////////// // CDrawView drawing void CDrawView::OnDraw(CDC* pDC) { CDrawDoc* pDoc = GetDocument(); ASSERT_VALID(pDoc); // TODO: add draw code for native data here CBitmap * pOldBitmap = m_pMemDC->SelectObject(m_pBitmap); pDC->BitBlt(0,0,m_nMaxX, m_nMaxY, m_pMemDC, 0,0, SRCCOPY); m_pMemDC->SelectObject(pOldBitmap); } ///////////////////////////////////////////////////////////////////////////// // CDrawView printing BOOL CDrawView::OnPreparePrinting(CPrintInfo* pInfo) { // default preparation return DoPreparePrinting(pInfo); } void CDrawView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/) { // TODO: add extra initialization before printing } void CDrawView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/) { // TODO: add cleanup after printing } ///////////////////////////////////////////////////////////////////////////// // CDrawView diagnostics #ifdef _DEBUG void CDrawView::AssertValid() const { CView::AssertValid(); } void CDrawView::Dump(CDumpContext& dc) const { CView::Dump(dc); } CDrawDoc* CDrawView::GetDocument() // non-debug version is inline { ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CDrawDoc))); return (CDrawDoc*)m_pDocument; } #endif //_DEBUG ///////////////////////////////////////////////////////////////////////////// // CDrawView message handlers int CDrawView::OnCreate(LPCREATESTRUCT lpCreateStruct) { if (CView::OnCreate(lpCreateStruct) == -1) return -1; // TODO: Add your specialized creation code here m_nMaxX = GetSystemMetrics(SM_CXSCREEN); m_nMaxY = GetSystemMetrics(SM_CYSCREEN); CDC * pDC = GetDC(); m_pMemDC->CreateCompatibleDC(pDC); m_pBitmap->CreateCompatibleBitmap(pDC, m_nMaxX, m_nMaxY); CBitmap * pOldBitmap = m_pMemDC->SelectObject(m_pBitmap); CBrush brush; brush.CreateStockObject(WHITE_BRUSH); CRect rect(-1,-1,m_nMaxX, m_nMaxY); m_pMemDC->FillRect(rect,&brush); m_pMemDC->SelectObject(pOldBitmap); ReleaseDC(pDC); return 0; } void CDrawView::OnSelectDrawType(UINT nID) { m_nDrawType = nID - ID_DRAW_LINE; } void CDrawView::OnUpdateSelectDrawType(CCmdUI * pCmdUI) { int nID = pCmdUI->m_nID - ID_DRAW_LINE; if(nID == m_nDrawType) pCmdUI->SetCheck(true); else pCmdUI->SetCheck(false); } void CDrawView::OnDrawLineWidth(UINT nID) { m_nLineWidth = nID - ID_DRAW_LINEWIDTH_ONE + 1; } void CDrawView::OnUpdateDrawLineWidth(CCmdUI * pCmdUI) { int nID = pCmdUI->m_nID - ID_DRAW_LINEWIDTH_ONE + 1; if(nID == m_nLineWidth) pCmdUI->SetCheck(true); else pCmdUI->SetCheck(false); } void CDrawView::OnDrawLinecolor() { // TODO: Add mand handler code here CColorDialog dlg; .Flags |= CC_PREVENTFULLOPEN | CC_RGBINIT; .rgbResult = m_cLineColor; if(dlg.DoModal() == IDOK) { m_cLineColor = dlg.GetColor(); } } void CDrawView::OnDrawFillcolor() { // TODO: Add mand handler code here CColorDialog dlg; .Flags |= CC_PREVENTFULLOPEN | CC_RGBINIT; .rgbResult = m_cFillColor; if(dlg.DoModal() == IDOK) { m_cFillColor = dlg.GetColor(); } } void CDrawView::OnLButtonDown(UINT nFlags, CPoint point) { // TODO: Add your message handler code here and/or call default SetCapture(); m_bDrawing = true; m_ptStart = point; m_ptOld = point; if(m_nDrawType == 3) { CBrush * pOldBrush; CBitmap * pOldBitmap; CBrush brFill; brFill.CreateSolidBrush(m_cFillColor); pOldBrush = m_pMemDC->SelectObject(&brFill); pOldBitmap = m_pMemDC->SelectObject(m_pBitmap); m_pMemDC->ExtFloodFill(point.x,point.y, m_pMemDC->GetPixel(point), FLOODFILLSURFACE); Invalidate(false); m_pMemDC->SelectObject(pOldBrush); m_pMemDC->SelectObject(pOldBitmap); m_bDrawing = false; } CView::OnLButtonDown(nFlags, point); } void CDrawView::OnMouseMove(UINT nFlags, CPoint point) { // TODO: Add your message handler code here and/or call default if(m_bDrawing) { CDC * pDC = GetDC(); CBitmap * pOldBitmap = m_pMemDC->SelectObject(m_pBitmap); CPen pen; pen.CreatePen(PS_SOLID, m_nLineWidth, m_cLineColor); CPen * pOldPen = pDC->SelectObject(&pen); CBrush * pOldBrush = (CBrush *) pDC->SelectStockObject(NULL_BRUSH); CRect rectOld(m_ptStart, m_ptOld); rectOld.NormalizeRect(); rectOld.InflateRect(m_nLineWidth, m_nLineWidth); pDC->BitBlt(rectOld.left, , rectOld.Width(), rectOld.Height(),m_pMemDC, rectOld.left, , SRCCOPY); CRect rectNew(m_ptStart,point); switch(m_nDrawType) { case 0: pDC->MoveTo(m_ptStart); pDC->LineTo(point); break; case 1: pDC->Rectangle(rectNew); break; case 2: pDC->Ellipse(rectNew); break; default: break; } m_pMemDC->SelectObject(pOldBitmap); pDC->SelectObject(pOldPen); pDC->SelectObject(pOldBrush); ReleaseDC(pDC); m_ptOld = point; } CView::OnMouseMove(nFlags, point); } void CDrawView::OnLButtonUp(UINT nFlags, CPoint point) { // TODO: Add your message handler code here and/or call default if(m_bDrawing) { m_bDrawing = false; CBitmap * pOldBitmap = m_pMemDC->SelectObject(m_pBitmap); CPen pen; pen.CreatePen(PS_SOLID, m_nLineWidth, m_cLineColor); CPen * pOldPen = m_pMemDC->SelectObject(&pen); CBrush * pOldBrush = (CBrush *) m_pMemDC->SelectStockObject(NULL_BRUSH); CRect rectNew(m_ptStart,point); switch(m_nDrawType) { case 0: m_pMemDC->MoveTo(m_ptStart); m_pMemDC->LineTo(point); break; case 1: m_pMemDC->Rectangle(rectNew); break; case 2: m_pMemDC->Ellipse(rectNew); break; default: break; } Invalidate(false); m_pMemDC->SelectObject(pOldBitmap); m_pMemDC->SelectObject(pOldPen); m_pMemDC->SelectObject(pOldBrush); } ReleaseCapture(); CView::OnLButtonUp(nFlags, point); } BOOL CDrawView::OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message) { // TODO: Add your message handler code here and/or call default switch(m_nDrawType) { case 0: case 1: case 2: ::SetCursor(AfxGetApp()->LoadStandardCursor(IDC_CROSS)); break; case 3: ::SetCursor(AfxGetApp()->LoadCursor(ID_CURSOR_FILL)); break; default: ::SetCursor(AfxGetApp()->LoadStandardCursor(IDC_ARROW)); break; } return CView::OnSetCursor(pWnd, nHitTest, message); } 好久以前的了,要的话留下邮箱,我发给你~ 我可以帮助你,你先设置我最佳答案后,我百度Hii教你。

IMPLEMENT_RUNTIMECLASS

这些参数都是宏参数,他们都是为了去定义一个类型为CRuntimeClass的叫class##class_name的静态结构体实例,而这个静态的结构体实例是在DELCARE_DYNACREATE中被声明的。

而该结构体类型是这样的: struct CRuntimeClass { LPCSTR m_lpszClassName; int m_ClassSize; UINT mWSchema; CObject *(PASCAL *m_lpfunCreateObject)(); CRuntimeClass *m_pBaseClass; CObject *CreateObject(); static CRuntimeClass * PASCAL Load(); static CRuntimeClass *pFirstClass(); CRuntimeClass *m_pNextClass(); }; 而在_IMPLEMENT_RUNTIMECLASS中class_name中其被用作char _lpsz##class_name[]=#class_name; 而_lpsz##class_name用于对CRuntimeClass中的m_lpszClassName进行赋值。

用途:一般用于动态创建中字符串的比对。

base_class_name其用作RUNTIME_ClASS(base_class_name)对CRuntimeClass中的m_pBaseClass进行赋值。

用途:一般用于获取父类的静态CRuntimeClass变量:class##base_class_name; OxFFFF其用于对CRuntimeClass中的m_WSChema进行赋值。

用途:用于文档版本号。

在序列化中有用,在动态创建中可以不管它,就这么写就可以。

class_name::CreateObject是一个函数指针,该函数就是你自己都在问题中写了一遍,其对CRuntimeClass中的m_pfunCreateObject进行赋值。

用途:你自己也写了,用于在heap内存中创建new一个该类的对象,是最终目的。

MFC是如何创建窗口的?

CSingleDocTemplate* pDocTemplate; pDocTemplate = new CSingleDocTemplate( IDR_MAINFRAME, RUNTIME_CLASS(CFSDDoc), RUNTIME_CLASS(CMainFrame), // main SDI frame window RUNTIME_CLASS(CFSDView)); AddDocTemplate(pDocTemplate); // mand line for standard mands, DDE, file open CCommandLineInfo cmdInfo; ParseCommandLine(cmdInfo); // mands specified on mand line if (!ProcessShellCommand(cmdInfo)) return FALSE; // The one and only window has been initialized, so show and update it. m_pMainWnd->ShowWindow(SW_SHOW); m_pMainWnd->UpdateWindow(); return TRUE; 真正建立窗口的是ProcessShellCommand(cmdInfo)函数调用。



可以一步步跟踪。

使用c预言实现jpeg 图像格式的读取与写入

// 00Doc.cpp : implementation of the CMy00Doc class //#include "stdafx.h" #include "00.h"#include "00Doc.h"#ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif///////////////////////////////////////////////////////////////////////////// // CMy00DocIMPLEMENT_DYNCREATE(CMy00Doc, CDocument)BEGIN_MESSAGE_MAP(CMy00Doc, CDocument) //{{AFX_MSG_MAP(CMy00Doc)<br> // NOTE - the ClassWizard will add and remove mapping macros here.<br> // DO NOT EDIT what you see in these blocks of generated code!<br> //}}AFX_MSG_MAP END_MESSAGE_MAP()///////////////////////////////////////////////////////////////////////////// // CMy00Doc construction/destructionCMy00Doc::CMy00Doc() { // TODO: add one-time construction code here m_pImage = new CImageX;}CMy00Doc::~CMy00Doc() { delete m_pImage; }BOOL CMy00Doc::OnNewDocument() { if (!CDocument::OnNewDocument()) return FALSE; // TODO: add reinitialization code here // (SDI documents will reuse this document) return TRUE; } ///////////////////////////////////////////////////////////////////////////// // CMy00Doc serializationvoid CMy00Doc::Serialize(CArchive& ar) { if (ar.IsStoring()) { // TODO: add storing code here } else { // TODO: add loading code here } }///////////////////////////////////////////////////////////////////////////// // CMy00Doc diagnostics#ifdef _DEBUG void CMy00Doc::AssertValid() const { CDocument::AssertValid(); }void CMy00Doc::Dump(CDumpContext& dc) const { CDocument::Dump(dc); } #endif //_DEBUG///////////////////////////////////////////////////////////////////////////// // mands BOOL CMy00Doc::OnOpenDocument(LPCTSTR lpszPathName) { if (!CDocument::OnOpenDocument(lpszPathName)) return FALSE; // TODO: Add your specialized creation code here m_strFileName = lpszPathName;//ZWS 20040317 return m_pImage->Load( CString(lpszPathName) ); // return TRUE; }BOOL CMy00Doc::OnSaveDocument(LPCTSTR lpszPathName) { // TODO: Add your specialized code here and/or call the base class return m_pImage->Save( CString(lpszPathName) ); // return CDocument::OnSaveDocument(lpszPathName); }

wordpress外贸企业主题 wordpress经典外贸企业建站主题

WordPress经典外贸企业建站主题,经典配色扁平化简约设计+跨屏自适应移动端设备,特色外贸企业建站功能模块+在线Inquiry询单功能,更有利于Google等英文搜索优化和站点收录。采用标准的HTML5+CSS3语言开发,兼容当下的各种主流浏览器: IE 6+(以及类似360、遨游等基于IE内核的)、Firefox、Google Chrome、Safari、Opera等;同时支持移动终端的常用...

GreenCloudVPS$20/年,新加坡/美国/荷兰vps/1核/1GB/30GB,NVMe/1TB流量/10Gbps端口/KVM

greencloudvps怎么样?greencloudvps是一家国外主机商,VPS数据中心多,之前已经介绍过多次了。现在有几款10Gbps带宽的特价KVM VPS,Ryzen 3950x处理器,NVMe硬盘,性价比高。支持Paypal、支付宝、微信付款。GreenCloudVPS:新加坡/美国/荷兰vps,1核@Ryzen 3950x/1GB内存/30GB NVMe空间/1TB流量/10Gbps...

LOCVPS:VPS主机全场8折,德国/荷兰/美国KVM终身7折

LOCVPS发来了针对元旦新年的促销活动,除了全场VPS主机8折优惠外,针对德国/荷兰KVM #1/美国KVM#2 VPS提供终身7折优惠码(限量50名,先到先得)。LOCVPS是一家成立于2012年的国人VPS服务商,提供中国香港、韩国、美国、日本、新加坡、德国、荷兰、俄罗斯等地区VPS服务器,基于KVM或XEN架构(推荐优先选择KVM),均选择直连或者优化线路,国内延迟低,适合建站或远程办公使...

implement_dyncreate为你推荐
旺旺群发软件旺旺群发软件哪个比较好网络视频下载器网络视频下载工具哪个好用?pps官网pps软件下载中心 pps影视软件下载listviewitem求解如何获取listview中的itemsdfsdfsdfsdf小米手机投诉热线云输入法QQ云输入法怎样进行中英文切换?erp系统教程如何使用ERP系统操作?gbk内码高考姓名gbk内码查询flex是什么这些b365m和b360m什么意思网页背景音乐代码网页背景音乐的源码一般在哪?
代理主机 快速域名备案 mediafire下载 php探针 新站长网 商务主机 促正网秒杀 有奖调查 可外链网盘 支持外链的相册 东莞服务器托管 全能空间 工信部网站备案查询 大化网 cdn服务 mteam 美国西雅图独立 阿里云宕机故障 paypal登陆 linux命令vi 更多