WTL-A WTL window hosting ActiveX control(IE)

演示如何在WTL窗口中容纳ActiveX控件（Windows自带的IE(WebBrowser)控件）：

#pragma once

#include "stdafx.h"

#include <ExDisp.h>

#include <ExDispid.h>

//ID of WebBrowser control

const UINT ID_WebBrowser = 1;

typedef CWinTraits<WS_OVERLAPPEDWINDOW|WS_CLIPCHILDREN> CMainWinTraits;

class CMainWindow :

    public CWindowImpl<CMainWindow,CWindow,CMainWinTraits>,

    public IDispEventImpl<ID_WebBrowser,CMainWindow>

{

public:

    DECLARE_WND_CLASS(_T("WTL ActiveX host window"))

    //Windows message handler

    BEGIN_MSG_MAP(CMainWindow)

        MSG_WM_CREATE(OnCreate)

        MSG_WM_DESTROY(OnDestroy)

        MSG_WM_SIZE(OnSize)

    END_MSG_MAP()

    //WebBrowser control event message handler

    BEGIN_SINK_MAP(CMainWindow)

        SINK_ENTRY(ID_WebBrowser,DISPID_DOWNLOADBEGIN,OnDownloadBegin)

        SINK_ENTRY(ID_WebBrowser,DISPID_DOWNLOADCOMPLETE,OnDownloadComplete)

    END_SINK_MAP()

    

    int OnCreate(LPCREATESTRUCT lpCreateStruct)

    {

        CRect rc;

        GetClientRect(&rc);

        /*

        //Create the WebBrowser control(IE) with ProgId

        HWND hWndIE = m_ax.Create(

            m_hWnd,

            rc,

            _T("Shell.Explorer.2"), //ProgId of WebBrowser control

            WS_CHILD|WS_VISIBLE,

            0,

            ID_WebBrowser);

        ATLASSERT(hWndIE);

        */

        

        //Create the WebBrowser control(IE) with CLSID

        CComPtr<IUnknown> spUnkWebBrowser;

        HRESULT hr = spUnkWebBrowser.CoCreateInstance(CLSID_WebBrowser);

        CHECKHR(hr);

        //Create the ActiveX host window

        HWND hWndWB = m_ax.Create(

            m_hWnd,

            rc,

            NULL,

            WS_CHILD|WS_VISIBLE,

            0,

            ID_WebBrowser);

        ATLASSERT(hWndWB);

        //Attach the WebBrowser control to host window

        CComPtr<IUnknown> spUnkContainer;

        m_ax.AttachControl(spUnkWebBrowser,&spUnkContainer);

        //Advise sink map

        AtlAdviseSinkMap(this,true);

        //Query interface

        hr = m_ax.QueryControl(&m_spIWebBrowser);

        CHECKHR(hr);

        CComBSTR site(_T("http://www.hust.edu.cn"));

        CComVariant v;

        hr = m_spIWebBrowser->Navigate(site,&v,&v,&v,&v);

        CHECKHR(hr);

        return 0;

    }

    

    void OnDestroy()

    {

        //Unadvise sink map

        AtlAdviseSinkMap(this,false);

        PostQuitMessage(0);

    }

    

    void OnSize(UINT nType, CSize size)

    {

        CRect rc;

        GetClientRect(&rc);

        m_ax.SetWindowPos(m_hWnd,&rc,SWP_NOZORDER|SWP_NOACTIVATE);

    }

    void __stdcall OnDownloadBegin()

    {

        SetWindowText(_T("Download begin:"));

    }

    void __stdcall OnDownloadComplete()

    {

        SetWindowText(_T("Download completed."));

    }

private:

    CAxWindow m_ax;

    CComPtr<IWebBrowser2> m_spIWebBrowser;

};

效果：