获取其它进程中的Web Browser中的HTML源码_browser获取网页源代码-优快云博客

本文介绍了一种通过Windows API函数FindWindow和FindWindowEx定位Internet Explorer窗口，并使用注册消息和COM接口从IE中提取HTML源代码的方法。该方法适用于需要抓取网页内容的场景。

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HWND H1,H2,H3,H4,hw;
H1=H2=H3=H4=hw=NULL;
H1=::FindWindow("TForm1",NULL);
if (H1) H2=::FindWindowEx(H1,NULL,"Shell Embedding",NULL);
if (H2) H3=::FindWindowEx(H2,NULL,"Shell DocObject View",NULL);
if (H3) H4=::FindWindowEx(H3,NULL,"Internet Explorer_Server",NULL);

if (H4) hw=H4;
else
{
AfxMessageBox("No Found the Dialog with IE!");
return;
}

IHTMLDocument2 *pHTMLDocument=NULL;
DWORD lRes;
HRESULT hres;

UINT MSG = RegisterWindowMessage("WM_HTML_GETOBJECT");
SendMessageTimeout(hw, MSG, 0, 0, SMTO_ABORTIFHUNG, 1000, &lRes);

hres=ObjectFromLresult(lRes,__uuidof(IHTMLDocument2),0,(void**)&pHTMLDocument);

if(hres==S_OK)
{
  IPersistStreamInit *pPSI=NULL;
  IStream *pStream=NULL;
  HGLOBAL hHTMLText;

  if (FAILED(pHTMLDocument->QueryInterface(&pPSI))) return;

  hHTMLText = GlobalAlloc(GMEM_FIXED, 65534);
  CreateStreamOnHGlobal(hHTMLText, TRUE, &pStream);
  pPSI->Save(pStream, FALSE);

  char *pText = (char*)hHTMLText;
  FILE *f=fopen("data_from_explorer.txt","w");
  fwrite(pText,1,strlen(pText),f);
  fclose(f);
  AfxMessageBox("the source codes Saved in data_from_explorer.txt");

pStream->Release();
pPSI->Release();
}