//////////////////////////////////////DDE回调函数； HDDEDATA CALLBACK DdeCallback(UINT wType,UINT wFmt,HCONV hConv,HSZ Topic,HSZ Item, HDDEDATA hData,DWORD lData1,DWORD lData2) int I ; char tmp[255]; switch(wType) case XTYP_ADVSTART: case XTYP_CONNECT://请求连接； return ((HDDEDATA)TRUE);//允许； case XTYP_ADVDATA: //有数据到来； for(I=0;I<NITEM;I++) if(Item==hszItem[I]) DdeGetData(hData,(PBYTE)tmp,255,0);//取得数据； switch(I) case 0: SetDlgItemText(hWnd,IDC_STATIC2,tmp); break; case 1: SetDlgItemText(hWnd,IDC_STATIC3,tmp); break; return ((HDDEDATA)DDE_FACK);//回执； case XTYP_ADVREQ: case XTYP_REQUEST://数据请求； for(I=0;I<NITEM;I++) if(Item==hszItem[I]) return(DdeCreateDataHandle(idlnst,(PBYTE)(LPCTSTR)ServerData[I], ServerData[I].GetLength()+1,0,Item,wFmt,0)); return(0); ///////////////////////////////////////////////////// CddedemoDlg.cpp CDdedemoDlg::CDdedemoDlg(CWnd* pParent /*=NULL*/) : CDialog(CDdedemoDlg::IDD, pParent) //AFX_DATA_INIT(CDdedemoDlg) m_edit = _T(""); //AFX_DATA_INIT // Note that LoadIcon does not require a subsequent DestroyIcon in Win32 m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); void CDdedemoDlg::DoDataExchange(CDataExchange* pDX) CDialog::DoDataExchange(pDX); //AFX_DATA_MAP(CDdedemoDlg) DDX_Text(pDX, IDC_EDIT1, m_edit); //AFX_DATA_MAP BEGIN_MESSAGE_MAP(CDdedemoDlg, CDialog) //AFX_MSG_MAP(CDdedemoDlg) ON_WM_SYSCOMMAND() ON_WM_PAINT() ON_WM_QUERYDRAGICON() ON_WM_TIMER() ON_WM_DESTROY() ON_EN_CHANGE(IDC_EDIT1, OnChangeEdit1) //AFX_MSG_MAP END_MESSAGE_MAP() //////////////////////////////////////////CDdedemoDlg message handlers BOOL CDdedemoDlg::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 hWnd=m_hWnd; if (DdeInitialize(&idlnst,(PFNCALLBACK)DdeCallback,APPCMD_FILTERINITS| CBF_FAIL_EXECUTES|CBF_SKIP_CONNECT_CONFIRMS|CBF_FAIL_SELFCONNECTIONS| CBF_FAIL_POKES,0)) MessageBox("DDE SERVER初始化失败!"); return FALSE; hlnst=AfxGetApp()->m_hInstance; //创建DDE string hszApp=DdeCreateStringHandle(idlnst,szApp,0); hszTopic=DdeCreateStringHandle(idlnst,szTopic,0); for(int I=0;I<NITEM;I++) hszItem[I]=DdeCreateStringHandle(idlnst,pszItem[I],0); //注册服务； DdeNameService(idlnst,hszApp,0,DNS_REGISTER); bConnect=FALSE; SetTimer(1,1000,NULL);//开始定时； return TRUE; // return TRUE unless you set the focus to a control void CDdedemoDlg::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 CDdedemoDlg::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 CDdedemoDlg::OnQueryDragIcon() return (HCURSOR) m_hIcon; void CDdedemoDlg::OnTimer(UINT nIDEvent) // TODO: Add your message handler code here and/or call default count++; ServerData[1].Format("%d",count); SetDlgItemText(IDC_STATIC1,ServerData[1]); DdePostAdvise(idlnst,hszTopic,hszItem[1]);//通知更新； if(!bConnect)//如果没有建立连接 hConv=DdeConnect(idlnst,hszApp,hszTopic,NULL); //连接服务器端； if(hConv) //如果建立成功 DWORD dwResult; bConnect=TRUE; for(int I=0;I<NITEM;I++) DdeClientTransaction(NULL,0,hConv,hszItem[I],CF_TEXT,XTYP_ADVSTART, TIMEOUT_ASYNC,&dwResult); CDialog::OnTimer(nIDEvent); void CDdedemoDlg::OnDestroy() CDialog::OnDestroy(); // TODO: Add your message handler code here KillTimer(1);//销毁定时； DdeNameService(idlnst,0,0,DNS_UNREGISTER);//注销服务； DdeFreeStringHandle(idlnst,hszApp); DdeFreeStringHandle(idlnst,hszTopic); for(int I=0;I<NITEM;I++) DdeFreeStringHandle(idlnst,hszItem[I]); DdeUninitialize(idlnst); void CDdedemoDlg::OnChangeEdit1() // TODO: If this is a RICHEDIT control, the control will not // send this notification unless you override the CDialog::OnInitDialog() // function and call CRichEditCtrl().SetEventMask() // with the ENM_CHANGE flag ORed into the mask. // TODO: Add your control notification handler code here UpdateData(); ServerData[0]=m_edit; DdePostAdvise(idlnst,hszTopic,hszItem[0]); //通知DDE更新该数据项目； 参考技术A/* windows,vs2010平台,进程间通信,图方便将两个进程都写在这一个源代码里面了 */ #include <Windows.h> int _tmain(int argc, _TCHAR* argv[])