从HWnd得到IWebbrowser2接口

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C# 通过HWND获取IE的IWebBrowser2接口 using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.Runtime.InteropService 阅读详情

程序代码

IWebBrowser2[color=#0000ff]* GetIEFromHWnd (HWND hIEWindow )
{ HWND hWnd ;
if (hIEWindow = =NULL ) {
   hWnd = FindWindow ( "IEFrame" , NULL ) ;
             if (hWnd = =NULL )
   hWnd = FindWindow ( "CabinetWClass" , NULL ) ;
      if ( hWnd = = NULL ) {
      MessageBox (NULL , "No Running instance of Internet Explorer!" , "message" , MB_OK ) ;
      }
      // walk Shell DocObject View->Internet Explorer_Server
     HWND hWndChild = FindWindowEx (hWnd , 0 , "Shell DocObject View" , NULL ) ;
      if (hWndChild ! =0 ) {
      hWndChild = FindWindowEx (hWndChild , 0 , "Internet Explorer_Server" , NULL ) ;
   }
  hWnd =hWndChild ;
}
else {
  hWnd =hIEWindow ;
}
// 我们需要显示地装载OLEACC.DLL,这样我们才知道有没有安装MSAA
HINSTANCE hInst = LoadLibrary ( _T ( "OLEACC.DLL" ) ) ;
IWebBrowser2 * pWebBrowser2 =NULL ;
if ( hInst ! = NULL ) {
   if ( hWnd ! = NULL ) {

   LRESULT lRes ;
   UINT nMsg = : :RegisterWindowMessage ( _T ( "WM_HTML_GETOBJECT" ) ) ;
    : :SendMessageTimeout ( hWnd , nMsg , 0L , 0L , SMTO_ABORTIFHUNG , 1000 , (DWORD * ) &lRes ) ;

   LPFNOBJECTFROMLRESULT pfObjectFromLresult = (LPFNOBJECTFROMLRESULT ) : :GetProcAddress ( hInst , _T ( "ObjectFromLresult" ) ) ;
    if ( pfObjectFromLresult ! = NULL ) {
    HRESULT hr ;
    CComPtr <IHTMLDocument2 >spDoc ;

    hr =pfObjectFromLresult (lRes ,IID_IHTMLDocument2 ,0 , ( void * * ) &spDoc ) ;
     if ( SUCCEEDED (hr ) ) {

     CComPtr <IHTMLWindow2 >spWnd2 ;
     CComPtr <IServiceProvider >spServiceProv ;
     hr =spDoc - >get_parentWindow ( (IHTMLWindow2 * * ) &spWnd2 ) ;
      if (SUCCEEDED (hr ) ) {

     hr =spWnd2 - >QueryInterface (IID_IServiceProvider , ( void * * ) &spServiceProv ) ;
       if (SUCCEEDED (hr ) ) {
       hr = spServiceProv - >QueryService (SID_SWebBrowserApp ,
                                         IID_IWebBrowser2 ,
                                          ( void * * ) &pWebBrowser2 ) ;


       }
      }
     }

     }
    }

   : :FreeLibrary (hInst ) ;
}
else { //如果没有安装MSAA
  MessageBox (NULL ,_T ( "Please Install Microsoft Active Accessibility" ) , "Error" ,MB_OK ) ;
}
return pWebBrowser2 ;
}[/color]

www.zxboy.com/article.asp?id=100 43K 2008-10-23 - 百度快照

通过 IHTMLDocument2 接口操作网页

2008年11月23日星期日下午 10:08

#include <mshtml.h>
#include <oleacc.h>
#include "atl//atlbase.h"
// 使用BCB中自带的oleacc.lib，也可以从IDE中添加：Project-->Add to Project
// 注意这里用的是我的机器上的路径
#pragma link "D://Program Files//Borland//CBuilder6//Lib//Psdk//oleacc.lib"

void __fastcall TForm1::Button1Click(TObject *Sender)
{
// 这里直接指定一个句柄,实际应用中可以通过各种方式获取句柄
HWND hWnd = (void *)0x001402B6;

IHTMLDocument2* spDoc2 = NULL;
DWORD dwRes;

UINT nMsg = ::RegisterWindowMessage("WM_HTML_GETOBJECT");
::SendMessageTimeout(hWnd, nMsg, 0L, 0L, SMTO_ABORTIFHUNG, 1000, &dwRes);

// 因为使用了静态的lib，不需要再GetProcAddress取函数地址了
HRESULT hr = ObjectFromLresult(dwRes, IID_IHTMLDocument, 0, (void **)&spDoc2);
if(SUCCEEDED(hr))
{
IDispatch *pDisp;
IHTMLWindow2 *pWin;
spDoc2->get_Script(&pDisp);
pDisp->QueryInterface(IID_IHTMLWindow2, (void **)&pWin);
pDisp->Release();
pWin->get_document(&spDoc2);
pWin->Release();

// 将页面的背景设为蓝色
VARIANT vColor;
vColor.vt = VT_BSTR;
vColor.bstrVal = WideString("blue").c_bstr();
spDoc2->put_bgColor(vColor);
}
// 以上代码在用IE打开一个网页以后，用Spy4Win取得Internet Explorer_Server
// 窗口的句柄，并用以上代码测试成功
}

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http://hi.baidu.com/ben2000/blog/item/ebb8d61fad145c64f724e447.html

根据Internet Explorer_Server窗口得到IHtmlDocument2接口选择自 111222 的 Blog
关键字	根据Internet Explorer_Server窗口得到IHtmlDocument2接口/IE/WebBrowser
出处

代码很少，自己看

#include <mshtml.h>
#include <atlbase.h>
#include <oleacc.h>

BOOL CALLBACK EnumChildProc(HWND hwnd,LPARAM lParam)
{
TCHAR buf[100];

::GetClassName( hwnd, (LPTSTR)&buf, 100 );
if ( _tcscmp( buf, _T("Internet Explorer_Server") ) == 0 ) /

{
  *(HWND*)lParam = hwnd;
  return FALSE;
}
else
  return TRUE;
};

//You can store the interface pointer in a member variable
//for easier access
void CDlg::OnGetDocInterface(HWND hWnd)
{
CoInitialize( NULL );

// Explicitly load MSAA so we know if it's installed
HINSTANCE hInst = ::LoadLibrary( _T("OLEACC.DLL") );
if ( hInst != NULL )
{
  if ( hWnd != NULL )
  {
   HWND hWndChild=NULL;
   // Get 1st document window
   ::EnumChildWindows( hWnd, EnumChildProc, (LPARAM)&hWndChild );
   if ( hWndChild )
   {
    CComPtr<IHTMLDocument2> spDoc;
    LRESULT lRes;

    UINT nMsg = ::RegisterWindowMessage( _T("WM_HTML_GETOBJECT") );
    ::SendMessageTimeout( hWndChild, nMsg, 0L, 0L, SMTO_ABORTIFHUNG, 1000, (DWORD*)&lRes );

    LPFNOBJECTFROMLRESULT pfObjectFromLresult = (LPFNOBJECTFROMLRESULT)::GetProcAddress( hInst, _T("ObjectFromLresult") );
    if ( pfObjectFromLresult != NULL )
    {
     HRESULT hr;
     hr = (*pfObjectFromLresult)( lRes, IID_IHTMLDocument, 0, (void**)&spDoc );
     if ( SUCCEEDED(hr) )
     {
      CComPtr<IDispatch> spDisp;
      CComQIPtr<IHTMLWindow2> spWin;
      spDoc->get_Script( &spDisp );
      spWin = spDisp;
      spWin->get_document( &spDoc.p );
      // Change background color to red
      spDoc->put_bgColor( CComVariant("red") );
     }
    }
   } // else document not ready
  } // else Internet Explorer is not running
  ::FreeLibrary( hInst );
} // else Active Accessibility is not installed
CoUninitialize();
}