WebBrowser 控件,如何确定页面载入完成

[yinzhaohui]

我的代码如下

#include <exdispid.h>
#include "browser.h"
/**
* @brief Html显示视
*/
class CHtmlShowView:
	public CWindowImpl<CHtmlShowView, CAxWindow>, 
	public CWebBrowser2<CHtmlShowView>
{
public:
	HWND m_parentWnd;
	CEdit *m_URL;
	CMultiPaneStatusBarCtrl *m_StatusBar;
	CListViewCtrl	*m_PostListView;
	CListViewCtrl	*m_HeaderListView;
	CRichEditCtrl	*m_PostRowDataShow;
	BOOL			m_isAnalyer;
	_bstr_t			m_requestURL;					//请求URL
	string			m_domain;						//请求域

	
	DECLARE_WND_SUPERCLASS(NULL, CAxWindow::GetWndClassName())
	CHtmlShowView(void):m_parentWnd(NULL),m_URL(NULL),m_StatusBar(NULL),m_isAnalyer(FALSE)
	{
		AtlAxWinInit();
		m_requestURL = "";
		m_domain = "";
	}
	~CHtmlShowView(void){}

	BOOL PreTranslateMessage(MSG* pMsg)
	{
		if((pMsg->message < WM_KEYFIRST || pMsg->message > WM_KEYLAST) &&
			(pMsg->message < WM_MOUSEFIRST || pMsg->message > WM_MOUSELAST))
			return FALSE;
		return (BOOL)SendMessage(WM_FORWARDMSG, 0, (LPARAM)pMsg);
	}

	BEGIN_MSG_MAP(CHtmlShowView)
		CHAIN_MSG_MAP(CWebBrowser2<CHtmlShowView>)
	END_MSG_MAP()

	BOOL StartHtml(LPCTSTR url)
	{
		Stop();
		m_isAnalyer = TRUE;
		CComPtr<IWebBrowser2> webBrowser2;
		m_requestURL = "";
		m_domain = "";
		HRESULT hr=this->QueryControl(__uuidof(IWebBrowser2),(void **)&webBrowser2);
		if(SUCCEEDED(hr))
			webBrowser2->Navigate(_bstr_t(url),NULL,NULL,NULL,NULL);
		return SUCCEEDED(hr);
	}

	//重载IE事件
	BOOL OnNewWindow2(IDispatch** ppDisp)
	{
		return TRUE;
	}

	void OnDocumentComplete(IDispatch* pDisp, const CComBSTR& szURL)
	{
		IUnknown *pUnk = NULL;
		HRESULT hr=this->QueryControl(__uuidof(IUnknown),(void **)&pUnk);
		ATLASSERT(pUnk);

		LPDISPATCH lpWBDisp = NULL;
		hr = pUnk->QueryInterface(IID_IDispatch, (void**)&lpWBDisp);
		ATLASSERT(SUCCEEDED(hr));
		if (pDisp == lpWBDisp )
		{
			m_requestURL = "";
			m_domain = "";
			::PostMessage(m_parentWnd,MSG_SHOWTREE,(WPARAM)pDisp,(LPARAM)&szURL);
			if(m_isAnalyer)
			{
				m_isAnalyer = FALSE;
				::PostMessage(m_parentWnd,MSG_ANALYSER,(WPARAM)pDisp,(LPARAM)&szURL);
			}
		}
		lpWBDisp->Release();
	}

	string GetDomainUrl(LPCSTR lpUrl)
	{
		string domain;
		LPCSTR lpStart = ::StrStrI(lpUrl,"http://");
		if(lpStart!=NULL)
		{
			lpStart+=7;
			LPCSTR lpEnd = ::StrStrI(lpStart,"/");
			if(lpEnd != NULL)
			{
				lpStart = ::StrStrI(lpStart,".");
				if(lpStart != NULL &&  lpEnd != NULL)
				{
					if(lpStart < lpEnd)
					{
						domain.append((char *)lpStart,lpEnd-lpStart);
					}
				}
			}
		}
		return domain;
	}

	BOOL OnBeforeNavigate2(IDispatch* pDisp, const CComBSTR& szURL, DWORD dwFlags, const CComBSTR& szTargetFrameName, string &postedData, const CComBSTR& szHeaders)
	{
		return FALSE;
	}

	void OnNavigateComplete2(IDispatch* pDisp, const CComBSTR& szURL)
	{
		ATLASSERT(m_URL!=NULL);
		m_requestURL = _bstr_t(GetLocationURL());
		m_URL->SetWindowText(m_requestURL.operator char *());
	}

	void OnStatusTextChange(const CComBSTR szText)
	{
		ATLASSERT(m_StatusBar!=NULL);
		m_StatusBar->SetPaneText(ID_DEFAULT_PANE,_bstr_t(szText));
	}

	void OnProgressChange(long nProgress, long nProgressMax)
	{
		ATLASSERT(m_StatusBar!=NULL);
		CString szText;
		if (nProgressMax>0 && nProgress >0)
		{
			int percentage=(nProgress*100)/nProgressMax;
			if(percentage >100)
				percentage=100;
			else if(percentage<0)
				percentage=0;
			szText.Format(_T("%d%%"),percentage);
		}
		m_StatusBar->SetPaneText(IDR_PROGRESS,szText);
	}
};

主要就是OnDocumentComplete回调,回调后对文档进行解决后DOM树不完整
我想知道大家是如何处理一个页面什么时后完成.

[会思考的草]

检查DocumentComplete或者检查progress有没有继续变动

[biweilun]

DocumentComplete

[oyljerry]

OnDocumentComplete()
get_busy() 等

[yinzhaohui]

确定在OnDocumentComplete回调后
get_busy() 为 0
状态为完成状态
解释角本,DOM树不完整,是否对于一些角本还没有运行完成

[TianChong]

OnDocumentComplete()或者
OnDocumentComplete2()都可以.
get_busy()==0判断为完成状态
另外,你的网页如果有几个框架的话,会调用多次这个OnDocumentComplete()事件的,这时可能要作一下计数,例如你有3个框架,那就每OnDocumentComplete()一次就times++,当times==3时,才是三个框架全部载入完成,利用你打开CSDN论坛的贴子看看,有N个框架的.

[wenh7788]

不好意思，留名以后好找

[zhxingway]

不好意思,没有用过WebBrowser 控件...
正在用ZedGraph控件,也正在想办法确定图片是否已经加载完呢,

[spysoos]

Mark

[xjchilli]

呵呵。。。帮顶下。这确实是一个大家都关心的问题。至今我也在琢磨。

[sdsuper]

mark

[chenling2545]

我问下，调用OnDocumentComplete()函数怎么调用啊

[zwvista]

void CXXHtmlView::OnDocumentComplete(LPCTSTR lpszURL)
{
	CHtmlView::OnDocumentComplete(lpszURL);
	// The document is not complete until all of its data has been retrieved
	if(GetReadyState() != READYSTATE_COMPLETE) return;
        
        // Do something useful
}

[longlongmylove]

留名 观望

[hegun]

mark it

[lwixiaoyan]

至今没找到一个合适的办法解决

[ILoveRMB]

回复11楼：

我也上网找了很久，没找到解决办法。于是自己乱点，终于找到方法。

现在公布出来：

在界面上点右键，选择类向导，在Message框中选择DocumentComplete ，添加函数，就完成了

有空一起交流我的QQ 24327475

[feng7788]

如何等webbrowser 打开的页面加载成功 C#