com连接点方式的向导实现

李国帅 2009

使用连接点添加com控件事件的例子

1、控件类声明

// CTopseePlayer.h : 由 Microsoft Visual C++ 创建的 ActiveX 控件包装类的声明#pragma once/////////////////////////////////////////////////////////////////////////////// CTopseePlayerclass CTopseePlayer : public CWnd{protected:    DECLARE_DYNCREATE( CTopseePlayer )    //IMPLEMENT_DYNCREATE(CTopseePlayer, CWnd)public:    CLSID const& GetClsid()    {        static CLSID const clsid        = { 0x2C8548DD, 0x829D, 0x473C, { 0x9C, 0xF4, 0xBB, 0xA2, 0x3E, 0x12, 0xA6, 0x2B } };        return clsid;    }    virtual BOOL Create( LPCTSTR lpszClassName, LPCTSTR lpszWindowName, DWORD dwStyle,                         const RECT& rect, CWnd* pParentWnd, UINT nID,                         CCreateContext* pContext = NULL )    {        return CreateControl( GetClsid(), lpszWindowName, dwStyle, rect, pParentWnd, nID );    }    BOOL Create( LPCTSTR lpszWindowName, DWORD dwStyle, const RECT& rect, CWnd* pParentWnd,                 UINT nID, CFile* pPersist = NULL, BOOL bStorage = FALSE,                 BSTR bstrLicKey = NULL )    {        return CreateControl( GetClsid(), lpszWindowName, dwStyle, rect, pParentWnd, nID,                              pPersist, bStorage, bstrLicKey );    }// 操作public:    void Play()    {        InvokeHelper( 0x1, DISPATCH_METHOD, VT_EMPTY, NULL, NULL );    }    void Stop()    {        InvokeHelper( 0x2, DISPATCH_METHOD, VT_EMPTY, NULL, NULL );    }    CString GetURL()    {        CString result;        InvokeHelper( 0x3, DISPATCH_PROPERTYGET, VT_BSTR, ( void* )&result, NULL );        return result;    }    void PutURL( LPCTSTR newValue )    {        static BYTE parms[] = VTS_BSTR ;        InvokeHelper( 0x3, DISPATCH_PROPERTYPUT, VT_EMPTY, NULL, parms, newValue );    }...    void MonitorChange()    {        InvokeHelper(0x32, DISPATCH_METHOD, VT_EMPTY, NULL, NULL);    }    BOOL CheckFullScreen()    {        BOOL result;        InvokeHelper(0x33, DISPATCH_METHOD, VT_BOOL, (void*)&result, NULL);        return result;    }public:    int PointInRect( POINT pt, CRect &rect );    void DrawWhiteRect( CRect rect );    void DrawRedRect( CRect rect );    DECLARE_MESSAGE_MAP()    virtual BOOL PreTranslateMessage( MSG* pMsg );    CTopseePlayer();// 属性public:   BOOL m_bQuery;  //是否按下查询录象    //static BOOL m_bFullScreen;   //视频显示整个屏幕    static BOOL m_bLogin;    //static BOOL m_bDraw;    BOOL m_bLock;};

2、控件事件头文件

#pragma once#include "oaidl.h"class CEventSink :    public IDispatch{public:    CEventSink(CWnd* pParent = NULL);    ~CEventSink(void);    CWnd* m_pParent;public:    //void SetResultWnd(CEdit * pEdit);// IUnknown    STDMETHOD(QueryInterface)(const struct _GUID &iid,void ** ppv);    ULONG __stdcall AddRef(void);    ULONG __stdcall Release(void);// IDispatch    STDMETHOD(GetTypeInfoCount)(unsigned int *);    STDMETHOD(GetTypeInfo)(unsigned int,unsigned long,struct ITypeInfo ** );    STDMETHOD(GetIDsOfNames)(const IID &,LPOLESTR *,UINT,LCID,DISPID *);    STDMETHOD(Invoke)(long dispID,const struct _GUID &,unsigned long,unsigned short,struct tagDISPPARAMS * pParams,struct tagVARIANT *,struct tagEXCEPINFO *,unsigned int *);};

3、控件事件定义文件

#include "StdAfx.h"#include ".\eventsink.h"//#include "MultiViewer.h"//class CMainFrame;CEventSink::CEventSink(CWnd* pParent){    m_pParent = pParent;}CEventSink::~CEventSink(void){}// STDMETHODIMP 是宏，等价于 long __stdcallSTDMETHODIMP CEventSink::QueryInterface(const struct _GUID &iid,void ** ppv){    *ppv = this;    return S_OK;}ULONG __stdcall CEventSink::AddRef(void){    return 1;    }    // 做个假的就可以，因为反正这个对象在程序结束前是不会退出的ULONG __stdcall CEventSink::Release(void){    return 0;    }    // 做个假的就可以，因为反正这个对象在程序结束前是不会退出的STDMETHODIMP CEventSink::GetTypeInfoCount(unsigned int *){    return E_NOTIMPL;    }    // 不用实现，反正也不用STDMETHODIMP CEventSink::GetTypeInfo(unsigned int,unsigned long,struct ITypeInfo ** ){    return E_NOTIMPL;    }    // 不用实现，反正也不用STDMETHODIMP CEventSink::GetIDsOfNames(const IID &,LPOLESTR *,UINT,LCID,DISPID *){    return E_NOTIMPL;    }    // 不用实现，反正也不用STDMETHODIMP CEventSink::Invoke(                long dispID,                const struct _GUID &,                unsigned long,                unsigned short,                struct tagDISPPARAMS * pParams,                struct tagVARIANT *,                struct tagEXCEPINFO *,                unsigned int *){                            // 只需要实现这个就足够啦//    CMainFrame* pMainFrame = (CMainFrame*)m_pParent;//    CWorkStat* pStat = (CWorkStat*)m_pParent;    switch(dispID)//获取事件的id号，回调其他类的处理函数进行处理    {    case 1:    //Alarm        //if (pParams[0].cArgs != 3)        //    TRACE0("Arg Num is Error\n");        //TRACE3("Channel %d, Sub %d, Alarm Type %d\n", pParams->rgvarg[2].lVal, pParams->rgvarg[1].lVal, pParams->rgvarg[0].lVal);        //pStat->OnAlarm(pParams->rgvarg[2].lVal, pParams->rgvarg[1].lVal, pParams->rgvarg[0].lVal);        break;    case 2:  // PlayBegin(LONG Channel, LONG SubChannel)        TRACE1("channel %d play begin\n", pParams->rgvarg[1].lVal);        //pStat->OnPlayBegin(pParams->rgvarg[1].lVal, pParams->rgvarg[0].lVal);        //((CWorkStat*)m_pParent)->m_Info[pParams->rgvarg[1].lVal].SetPlayStat(TRUE);        break;    case 3: // PlayStop(LONG Channel, LONG SubChannel)        TRACE1("channel %d play stop\n", pParams->rgvarg[1].lVal);        //pStat->OnPlayStop(pParams->rgvarg[1].lVal, pParams->rgvarg[0].lVal);        //((CWorkStat*)m_pParent)->m_Info[pParams->rgvarg[1].lVal].SetPlayStat(FALSE);        break;    case 4: // SaveBegin(LONG Channel, LONG SubChannel)        //pStat->OnSaveBegin(pParams->rgvarg[1].lVal, pParams->rgvarg[0].lVal);        //((CWorkStat*)m_pParent)->m_Info[pParams->rgvarg[1].lVal].SetSaveStat(TRUE);        break;    case 5: // SaveStop(LONG Channel, LONG SubChannel)        //pStat->OnSaveStop(pParams->rgvarg[1].lVal, pParams->rgvarg[0].lVal);//        ((CWorkStat*)m_pParent)->m_Info[pParams->rgvarg[1].lVal].SetSaveStat(FALSE);        break;.....    default:        TRACE0( "怎么可能，根本就没有这个号码的函数呀\n" );        break;    }    return S_OK;}

4、控件调用头文件

// MainFrm.h : CMainFrame 类的接口#pragma once#include "CTopseePlayer.h"#include "EventSink.h"class CMainFrame : public CFrameWnd{public:    CMainFrame();protected:    DECLARE_DYNAMIC(CMainFrame)// 重写public:    virtual BOOL PreCreateWindow(CREATESTRUCT& cs);    virtual BOOL OnCmdMsg(UINT nID, int nCode, void* pExtra, AFX_CMDHANDLERINFO* pHandlerInfo);// 实现public:    virtual ~CMainFrame();#ifdef _DEBUG    virtual void AssertValid() const;    virtual void Dump(CDumpContext& dc) const;#endif// 属性public:public://    CChildView    m_wndView;    CTopseePlayer *pDisplay;    CEventSink* pEvent;    IConnectionPoint* m_pConPoint;    DWORD m_dwAdvise;// 生成的消息映射函数protected:    afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);    afx_msg void OnSetFocus(CWnd *pOldWnd);    DECLARE_MESSAGE_MAP()public:    afx_msg void OnMove(int x, int y);    afx_msg void OnSize(UINT nType, int cx, int cy);    afx_msg void OnOpenFile();    afx_msg void OnOpenUrl();};

5、事件的具体调用

//// MainFrm.cpp : CMainFrame 类的实现#include "stdafx.h"#include "TSPlayer.h"#include "MainFrm.h"#include ".\mainfrm.h"#include "openurldlg.h"#ifdef _DEBUG#define new DEBUG_NEW#endif// CMainFrameIMPLEMENT_DYNAMIC(CMainFrame, CFrameWnd)BEGIN_MESSAGE_MAP(CMainFrame, CFrameWnd)    ON_WM_CREATE()    ON_WM_SETFOCUS()    ON_WM_MOVE()    ON_WM_SIZE()    ON_COMMAND(ID_OPEN_FILE, OnOpenFile)    ON_COMMAND(ID_OPEN_URL, OnOpenUrl)END_MESSAGE_MAP()// CMainFrame 构造/析构CMainFrame::CMainFrame(){    // TODO: 在此添加成员初始化代码    pDisplay = new CTopseePlayer();    //pEvent = new CEventSink();}CMainFrame::~CMainFrame(){    if (pEvent != NULL)        delete pEvent;    if (pDisplay != NULL)        delete pDisplay;}int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct){    if (CFrameWnd::OnCreate(lpCreateStruct) == -1)        return -1;    RECT rcClient;    GetClientRect(&rcClient);    if (!pDisplay->Create(_T(""), WS_VISIBLE|WS_CHILD, CRect(rcClient.left, rcClient.top, rcClient.right, rcClient.bottom), this, 100)) {        MessageBox(_T("Display control initialize failed, program exit now!"));        PostMessage(WM_CLOSE);        return FALSE;    }    pDisplay->PutRunMode(0);    pDisplay->PutShowControls(true);    m_pConPoint = NULL;    pEvent = new CEventSink(this);    IConnectionPointContainer * pContainer;    IUnknown* pDisplayUnk = ((CMainFrame*)theApp.GetMainWnd())->pDisplay->GetControlUnknown();    GUID IID_ITopseePlayerEvents = { 0x22143EA9, 0x10C5, 0x43A6, 0xA0, 0x6C, 0x20, 0xE7, 0x87, 0x8B, 0x1C, 0xB8 };    if (pDisplayUnk) {        pDisplayUnk->QueryInterface(IID_IConnectionPointContainer, (LPVOID*)&pContainer);        pDisplayUnk->Release();        if (pContainer) {            pContainer->FindConnectionPoint(IID_ITopseePlayerEvents, &m_pConPoint);            pContainer->Release();            if (m_pConPoint) {                m_pConPoint->Advise(pEvent, &m_dwAdvise);            }        }    }    return 0;}BOOL CMainFrame::PreCreateWindow(CREATESTRUCT& cs){    if( !CFrameWnd::PreCreateWindow(cs) )        return FALSE;    // TODO: 在此处通过修改 CREATESTRUCT cs 来修改窗口类或    // 样式    cs.cx = 360;    cs.cy = 360;    //cs.dwExStyle &= ~WS_EX_CLIENTEDGE;    //cs.lpszClass = AfxRegisterWndClass(0);    return TRUE;}// CMainFrame 诊断#ifdef _DEBUGvoid CMainFrame::AssertValid() const{    CFrameWnd::AssertValid();}void CMainFrame::Dump(CDumpContext& dc) const{    CFrameWnd::Dump(dc);}#endif //_DEBUG// CMainFrame 消息处理程序void CMainFrame::OnSetFocus(CWnd* /*pOldWnd*/){    // 将焦点前移到视图窗口//    m_wndView.SetFocus();    if (pDisplay != NULL)        pDisplay->SetFocus();}BOOL CMainFrame::OnCmdMsg(UINT nID, int nCode, void* pExtra, AFX_CMDHANDLERINFO* pHandlerInfo){    // 让视图第一次尝试该命令//    if (m_wndView.OnCmdMsg(nID, nCode, pExtra, pHandlerInfo))//        return TRUE;    // 否则，执行默认处理    return CFrameWnd::OnCmdMsg(nID, nCode, pExtra, pHandlerInfo);}void CMainFrame::OnMove(int x, int y){    CFrameWnd::OnMove(x, y);    CRect rtRect;    GetClientRect(&rtRect);    if (pDisplay != NULL)        pDisplay->MoveWindow(&rtRect);}void CMainFrame::OnSize(UINT nType, int cx, int cy){    CFrameWnd::OnSize(nType, cx, cy);    CRect rtRect;    GetClientRect(&rtRect);    if (pDisplay != NULL)        pDisplay->MoveWindow(&rtRect);}void CMainFrame::OnOpenFile(){    TCHAR resultFile[MAX_PATH] = {'\0'};    OPENFILENAME fileName;    ZeroMemory(&fileName, sizeof(OPENFILENAME));    fileName.lStructSize = sizeof(OPENFILENAME);    fileName.hwndOwner = m_hWnd;    //fileName.hInstance = 0; // ZeroMemory does the work.    fileName.lpstrFilter = _T("All Files (*.asf)\0*.asf\0\0");    fileName.lpstrCustomFilter = NULL;    //fileName.nMaxCustFilter = 0; // ZeroMemory does the work.    fileName.nFilterIndex = -1;    fileName.lpstrFile = resultFile;    fileName.nMaxFile = MAX_PATH;    fileName.lpstrInitialDir = NULL;    fileName.lpstrTitle = _T("Select Open File");    fileName.Flags = OFN_EXPLORER + OFN_ENABLESIZING + OFN_HIDEREADONLY;// | extraFlags;    if (GetSaveFileName(&fileName))    {        pDisplay->PutRunMode(2);        pDisplay->PutFileName(resultFile);        pDisplay->PlayFile();    }}void CMainFrame::OnOpenUrl(){    COpenUrlDlg dlg;    if (dlg.DoModal() == IDOK) {        if (dlg.m_Url.GetLength() == 0)            return;        pDisplay->PutRunMode(0);        pDisplay->PutURL(dlg.m_Url);        if (dlg.m_User.GetLength() != 0)            pDisplay->PutUserName(dlg.m_User);        if (dlg.m_Passwd.GetLength() != 0)            pDisplay->PutPasswd(dlg.m_Passwd);        pDisplay->Play();    }}