测试C++代码与WebBrowser HTML的互动

时间：2017-10-07 21:47:09 阅读：325 评论：0 收藏：0 [点我收藏+]

testWebBrowserDlg.h

[cpp] view plain copy

// testWebBrowserDlg.h : 头文件
//
#pragma once
#include "explorer1.h"
#import "C:\windows\system32\mshtml.tlb" // location of mshtml.tlb
#include <map>
#include <comdef.h>
#include <mshtml.h>
#include <mshtmdid.h>
/*
标题：测试C++代码与WebBrowser HTML的互动
Author:Kagula
Date:2014-08-20
版本号：3
Test Env: Windows8.1、VS2013 Update2
内容：
[1]如何拿到html中的elements，取得它的属性!
[2]如何响应element激发的事件
[3]如何修改指定element的属性
[4]如何Render内存中的html字符串
参考资料
[1]《MFC中针对WebBrowser控件增加link链接点击事件监控》
http://www.mworkbox.com/wp/work/509.html
[2]《IWebBrowser2 interface》
http://msdn.microsoft.com/en-us/library/aa752127(VS.85).aspx
[3]《Handling HTML Element Events》
http://msdn.microsoft.com/en-us/library/bb508508(v=vs.85).aspx
[4]《如何从 VC web 浏览器应用程序中调用脚本函数》
http://support.microsoft.com/kb/q185127
[5]《Loading HTML content from a Stream》
http://msdn.microsoft.com/en-us/library/ie/aa752047%28v=vs.85%29.aspx
[6]《How do I get the font color from a piece of HTML source code?》
http://stackoverflow.com/questions/7402347/how-do-i-get-the-font-color-from-a-piece-of-html-source-code
[7]《How to create a sink interface in a MFC-based COM client》
http://support.microsoft.com/default.aspx?scid=kb;en-us;181845
[8]《How To Use the Microsoft WebBrowser Control to Render HTML from Memory》
http://www.nuonsoft.com/blog/2010/03/24/how-to-use-the-microsoft-webbrowser-control-to-render-html-from-memory/comment-page-1/
[9]《How do I get the font color from a piece of HTML source code?》
http://stackoverflow.com/questions/7402347/how-do-i-get-the-font-color-from-a-piece-of-html-source-code
[10]《Using the WebBrowser control, simplified》
http://www.codeproject.com/Articles/3919/Using-the-WebBrowser-control-simplified
[11]《Microsoft Internet Explorer 5.5 behaviors》
http://msdn.microsoft.com/en-us/magazine/cc301528.aspx
[12]《Using IHTMLEditDesigner》
http://www.codeproject.com/Articles/6546/Using-IHTMLEditDesigner
[13]《MFC C++ WebBrowser Control load HTML from a string》
http://stackoverflow.com/questions/9179179/mfc-c-webbrowser-control-load-html-from-a-string
[14]VC++ webbrowser函数使用范例
[15]《【webbrowser使用】_webbrowser使用的相关文章，教程，源码》
http://www.xuebuyuan.com/zt/12577882.html
*/
namespace kagula
{
struct ConnectionInfo
{
IDispatch* dispatch;
IID iid;
DWORD cookie;
ConnectionInfo() {}
ConnectionInfo(IDispatch *dispatch, IID iid, DWORD cookie)
{
this->dispatch = dispatch, this->iid = iid, this->cookie = cookie;
}
};
}
// CtestWebBrowserDlg 对话框
class CtestWebBrowserDlg : public CDialogEx
{
// 构造
public:
CtestWebBrowserDlg(CWnd* pParent = NULL); // 标准构造函数
// 对话框数据
enum { IDD = IDD_TESTWEBBROWSER_DIALOG };
protected:
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV 支持
// 实现
protected:
HICON m_hIcon;
// 生成的消息映射函数
virtual BOOL OnInitDialog();
afx_msg void OnSysCommand(UINT nID, LPARAM lParam);
afx_msg void OnPaint();
afx_msg HCURSOR OnQueryDragIcon();
DECLARE_MESSAGE_MAP()
public:
CExplorer1 m_webBrowser;
void SetElementAttribute(MSHTML::IHTMLDocument2Ptr htmlDoc,CString elementID,CString attributeName,CString value);
std::map<IDispatch*, kagula::ConnectionInfo> m_mapElem2EventCookie;//用于释放Connection
void ReleaseHTMLConnection();
void DemoGetElement(LPDISPATCH pDisp, VARIANT* URL);
void DemoGetAllLinkElement(LPDISPATCH pDisp, VARIANT* URL);
void OnClick(MSHTML::IHTMLEventObj *pEvtObj);
void OnLostFocus(MSHTML::IHTMLEventObj *pEvtObj);
void WriteHTML(const wchar_t* html);
afx_msg void OnBnClickedMemoryRender();
//added new three map macros
DECLARE_EVENTSINK_MAP()
DECLARE_DISPATCH_MAP()
DECLARE_INTERFACE_MAP()
void BeforeNavigate2Explorer1(LPDISPATCH pDisp, VARIANT* URL, VARIANT* Flags, VARIANT* TargetFrameName, VARIANT* PostData, VARIANT* Headers, BOOL* Cancel);
void DocumentCompleteExplorer1(LPDISPATCH pDisp, VARIANT* URL);
afx_msg void OnBnClickedBtnSetspecifiedelementattr();
virtual void OnOK();
virtual void OnCancel();
};

testWebBrowserDlg.cpp

[cpp] view plain copy

// testWebBrowserDlg.cpp : 实现文件
//
#include "stdafx.h"
#include "testWebBrowser.h"
#include "testWebBrowserDlg.h"
#include "afxdialogex.h"
#include <string>
#include <afxctl.h>
#ifdef _DEBUG
#define new DEBUG_NEW
#endif
// CtestWebBrowserDlg 对话框
CtestWebBrowserDlg::CtestWebBrowserDlg(CWnd* pParent /*=NULL*/)
: CDialogEx(CtestWebBrowserDlg::IDD, pParent)
{
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
void CtestWebBrowserDlg::DoDataExchange(CDataExchange* pDX)
{
CDialogEx::DoDataExchange(pDX);
DDX_Control(pDX, IDC_EXPLORER1, m_webBrowser);
}
BEGIN_MESSAGE_MAP(CtestWebBrowserDlg, CDialogEx)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDC_BTN_RENDERSTRING, &CtestWebBrowserDlg::OnBnClickedMemoryRender)
ON_BN_CLICKED(IDC_BTN_SETSPECIFIEDELEMENTATTR, &CtestWebBrowserDlg::OnBnClickedBtnSetspecifiedelementattr)
END_MESSAGE_MAP()
// CtestWebBrowserDlg 消息处理程序
BOOL CtestWebBrowserDlg::OnInitDialog()
{
CDialogEx::OnInitDialog();
// 设置此对话框的图标。当应用程序主窗口不是对话框时，框架将自动
// 执行此操作
SetIcon(m_hIcon, TRUE); // 设置大图标
SetIcon(m_hIcon, FALSE); // 设置小图标
// TODO: 在此添加额外的初始化代码
EnableAutomation();//没有这行代码会导致GetIDispatch(FALSE)失败！
//m_webBrowser.Navigate(L"D:\\Workspace\\testWebBrowser\\testWebBrowser\\test.html",NULL,NULL,NULL,NULL);
m_webBrowser.Navigate(L"about:blank", NULL, NULL, NULL, NULL);
return TRUE; // 除非将焦点设置到控件，否则返回 TRUE
}
void CtestWebBrowserDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
CDialogEx::OnSysCommand(nID, lParam);
}
// 如果向对话框添加最小化按钮，则需要下面的代码
// 来绘制该图标。对于使用文档/视图模型的 MFC 应用程序，
// 这将由框架自动完成。
void CtestWebBrowserDlg::OnPaint()
{
if (IsIconic())
{
CPaintDC dc(this); // 用于绘制的设备上下文
SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);
// 使图标在工作区矩形中居中
int cxIcon = GetSystemMetrics(SM_CXICON);
int cyIcon = GetSystemMetrics(SM_CYICON);
CRect rect;
GetClientRect(&rect);
int x = (rect.Width() - cxIcon + 1) / 2;
int y = (rect.Height() - cyIcon + 1) / 2;
// 绘制图标
dc.DrawIcon(x, y, m_hIcon);
}
else
{
CDialogEx::OnPaint();
}
}
//当用户拖动最小化窗口时系统调用此函数取得光标
//显示。
HCURSOR CtestWebBrowserDlg::OnQueryDragIcon()
{
return static_cast<HCURSOR>(m_hIcon);
}
//测试:Render内存中的HTML
void CtestWebBrowserDlg::OnBnClickedMemoryRender()
{
m_webBrowser.Navigate(L"app://mymemory.page",NULL,NULL,NULL,NULL);
}
BEGIN_EVENTSINK_MAP(CtestWebBrowserDlg, CDialogEx)
ON_EVENT(CtestWebBrowserDlg, IDC_EXPLORER1, 250, CtestWebBrowserDlg::BeforeNavigate2Explorer1, VTS_DISPATCH VTS_PVARIANT VTS_PVARIANT VTS_PVARIANT VTS_PVARIANT VTS_PVARIANT VTS_PBOOL)
ON_EVENT(CtestWebBrowserDlg, IDC_EXPLORER1, 259, CtestWebBrowserDlg::DocumentCompleteExplorer1, VTS_DISPATCH VTS_PVARIANT)
END_EVENTSINK_MAP()
/* 第二步：处理所有种类元素的事件 */
BEGIN_INTERFACE_MAP(CtestWebBrowserDlg, CCmdTarget)
INTERFACE_PART(CtestWebBrowserDlg, DIID_HTMLElementEvents2, Dispatch)
END_INTERFACE_MAP()
/* 第三步：某种事件（元素类型无关）和哪个响应函数连*/
BEGIN_DISPATCH_MAP(CtestWebBrowserDlg, CCmdTarget)
DISP_FUNCTION_ID(CtestWebBrowserDlg, "HTMLELEMENTEVENTS2_ONCLICK", DISPID_HTMLELEMENTEVENTS2_ONCLICK, CtestWebBrowserDlg::OnClick, VT_EMPTY, VTS_DISPATCH)
DISP_FUNCTION_ID(CtestWebBrowserDlg, "HTMLELEMENTEVENTS2_ONFOCUSOUT", DISPID_HTMLELEMENTEVENTS2_ONFOCUSOUT, CtestWebBrowserDlg::OnLostFocus, VT_EMPTY, VTS_DISPATCH)
END_DISPATCH_MAP()
void CtestWebBrowserDlg::BeforeNavigate2Explorer1(LPDISPATCH pDisp, VARIANT* URL, VARIANT* Flags, VARIANT* TargetFrameName, VARIANT* PostData, VARIANT* Headers, BOOL* Cancel)
{
CString strURL(URL->bstrVal);
*Cancel = FALSE;
if (strURL == _T("about:blank"))
{
*Cancel = FALSE;
}
else
{
if (strURL.Find(_T("ThePageNeverReach.htm")) > 0 )
{//阻止跳转到指定页面！
*Cancel = TRUE;
return;
}
}
if (!(*Cancel))
{
//进入新页面之前，先释放掉事件连接
ReleaseHTMLConnection();
}
//演示，render内存中的html页面!
if (strURL.Find(_T("app://mymemory.page")) >= 0)
{
*Cancel = TRUE;
WriteHTML(L"<html><body><h1>My Header</h1><p>Some text below the header</p></body></html>");
return;
}
}
void CtestWebBrowserDlg::DocumentCompleteExplorer1(LPDISPATCH pDisp, VARIANT* URL)
{
//DemoGetElement(pDisp, URL);
DemoGetAllLinkElement(pDisp, URL);
}//end func
//演示：鼠标点击事件
void CtestWebBrowserDlg::OnClick(MSHTML::IHTMLEventObj *pEvtObj)
{
MSHTML::IHTMLElementPtr elem = pEvtObj->srcElement;
CString cstrID = elem->Getid();
CString cstrTag = elem->GettagName();//标签的名字
if (cstrID.GetLength()<=0)
{
return;
}
_variant_t name = elem->getAttribute(_T("name"), 0);
CString cstrName;
if (name.vt != VT_NULL)
{
cstrName = name;
}
_variant_t href = elem->getAttribute(_T("value"), 0);
CString cstrHref;
if (href.vt != VT_NULL)
{
cstrHref = href.bstrVal;
}
CString msg;
msg.Format(L"[id=%s][name=%s][tag=%s][value=%s]", cstrID.GetBuffer(),
cstrName.GetBuffer(), cstrTag.GetBuffer(), cstrHref.GetBuffer(MAX_PATH));
TRACE(msg);
}
//演示：响应标签失去焦点事件
void CtestWebBrowserDlg::OnLostFocus(MSHTML::IHTMLEventObj *pEvtObj)
{
MSHTML::IHTMLElementPtr elem = pEvtObj->srcElement;
CString cstrID = elem->Getid();
if (cstrID.GetLength()<=0)
{
return;
}
CString msg;
msg.Format(L"OnLostFocus cstrID = [%s]", cstrID.GetBuffer());
AfxMessageBox(msg);
}
//演示：拿到指定ID的标签元素，并打印它的属性
void CtestWebBrowserDlg::DemoGetElement(LPDISPATCH pDisp, VARIANT* URL)
{
IWebBrowser2Ptr webBrowser(pDisp);
IDispatchPtr htmlDocDisp;
(*webBrowser).get_Document(&htmlDocDisp);
MSHTML::IHTMLDocument2Ptr htmlDoc(htmlDocDisp);
MSHTML::IHTMLElementCollectionPtr elements;
(*htmlDoc).get_all(&elements);
IDispatchPtr disp;
_variant_t index(0L, VT_I4);
do
{
disp = (*elements).item(_variant_t("myFontTag"), index);
if (disp != NULL)
{
MSHTML::IHTMLElementPtr element(disp);
variant_t vtValue = element->getAttribute("color", 0);
CString cstr = vtValue;
TRACE(L"mytag标签的color属性为%s\n", cstr.GetBuffer(MAX_PATH));
++index.lVal;
}
} while (disp != NULL);
}
/*
拿到元素，并做链接
[1]《AfxConnectionAdvise》
http://msdn.microsoft.com/en-us/library/b9h84ebk.aspx
[2]《How to create a sink interface in a MFC-based COM client》
http://support.microsoft.com/default.aspx?scid=kb;en-us;181845
[3]《同Document建立Connection》
http://www.popkistopki.ru/ch08e.htm
*/
void CtestWebBrowserDlg::DemoGetAllLinkElement(LPDISPATCH pDisp, VARIANT* URL)
{
// Get the HTML document. //
IWebBrowser2Ptr webBrowser(pDisp);
IDispatchPtr htmlDocDisp;
(*webBrowser).get_Document(&htmlDocDisp);
MSHTML::IHTMLDocument2Ptr htmlDoc(htmlDocDisp);
if (htmlDoc == NULL) //URL属性为空
{
return;
}
//打印HTML页面内容
MSHTML::IHTMLElementPtr body = htmlDoc->Getbody();
variant_t html = body->parentElement->outerHTML;
//variant_t bodyHTML = body->GetouterHTML();
CString cstrBodyHTML = html;
TRACE(L"cstrBodyHTML.GetBuffer()========\n%s\n", cstrBodyHTML.GetBuffer());
//取HTML中的元素
DWORD dwCookie = 0;
// Get the collection of elements.
MSHTML::IHTMLElementCollectionPtr elements;
(*htmlDoc).get_all(&elements);
IDispatchPtr disp;
_variant_t index(0L, VT_I4);
do
{
//Get all elements
disp = (*elements).item(index, index);
if (disp != NULL)
{
// Examine their action attribute to determine what should be done.
IDispatchPtr element(disp);
MSHTML::IHTMLElementPtr elemTag(disp);
//第一步：建立Connection
DWORD dwCookie = 0;
BSTR name = NULL;
elemTag->get_tagName(&name);
if (name != NULL)
{
//is link!!!!
LPUNKNOWN pUnkSink = GetIDispatch(FALSE);
//关联全部类型元素
if (AfxConnectionAdvise(element, DIID_HTMLElementEvents2, pUnkSink, FALSE, &dwCookie))
{
kagula::ConnectionInfo ci(element.GetInterfacePtr(), DIID_HTMLElementEvents2, dwCookie);
m_mapElem2EventCookie[element.GetInterfacePtr()] = ci;
}
}//end if
++index.lVal;
}
} while (disp != NULL);
}
//释放同HTML的Connection
void CtestWebBrowserDlg::ReleaseHTMLConnection()
{
std::map<IDispatch *, kagula::ConnectionInfo>::iterator itr;
for (itr = m_mapElem2EventCookie.begin(); itr != m_mapElem2EventCookie.end(); itr++)
{
//DIID_HTMLDocumentEvents、DIID_HTMLAnchorEvents2、DIID_HTMLButtonElementEvents
AfxConnectionUnadvise(itr->first, itr->second.iid, GetIDispatch(FALSE), FALSE, itr->second.cookie);
}
m_mapElem2EventCookie.clear();
}
//测试，设置当前页面指定元素的属性
void CtestWebBrowserDlg::OnBnClickedBtnSetspecifiedelementattr()
{
CComPtr<IDispatch> spDisp = m_webBrowser.get_Application();
if (spDisp != NULL)
{
CComPtr<IWebBrowser2> spWeb;
HRESULT hr = spDisp->QueryInterface(IID_IWebBrowser2, (void**)&spWeb);
if (SUCCEEDED(hr))
{
IDispatchPtr htmlDocDisp;
spWeb->get_Document(&htmlDocDisp);
MSHTML::IHTMLDocument2Ptr htmlDoc(htmlDocDisp);
if (htmlDoc == NULL) //URL属性为空
{
return;
}
SetElementAttribute(htmlDoc, L"firstname", L"value", L"Marcia");
SetElementAttribute(htmlDoc, L"lastname",L"value", L"JohnDoe");
SetElementAttribute(htmlDoc, L"female",L"checked", L"1");
SetElementAttribute(htmlDoc, L"bike",L"checked", L"");
SetElementAttribute(htmlDoc, L"car",L"checked", L"1");
//演示，重定向到其它URL
//CComVariant varURL("http://www.intel.com");
//spWeb->Navigate2(&varURL, NULL, NULL, NULL, NULL);
}
}
}
void CtestWebBrowserDlg::SetElementAttribute(MSHTML::IHTMLDocument2Ptr htmlDoc, CString elementID, CString attributeName, CString value)
{
MSHTML::IHTMLElementCollectionPtr elements;
htmlDoc->get_all(&elements);
IDispatchPtr disp;
_variant_t index(0L, VT_I4);
do
{
disp = (*elements).item(_variant_t(elementID.GetBuffer()), index);
if (disp != NULL)
{
MSHTML::IHTMLElementPtr element(disp);
element->setAttribute(attributeName.GetBuffer(), value.GetBuffer(),0);
++index.lVal;
}
} while (disp != NULL);
}
/*测试render内存中的html*/
void CtestWebBrowserDlg::WriteHTML(const wchar_t* html)
{
IDispatch* pHtmlDoc = m_webBrowser.get_Document();
/*
在调用这段代码之前，如果你还没有url需要navigate，就必须在
OnInitDialog中插入下面的代码，否则拿不到document!
m_webBrowser.Navigate(L"about:blank",NULL,NULL,NULL,NULL);
*/
if (!pHtmlDoc)
return;
CComPtr<IHTMLDocument2> doc2;
doc2.Attach((IHTMLDocument2*)pHtmlDoc);
if (!doc2)
return;
// Creates a new one-dimensional array
SAFEARRAY* psaStrings = SafeArrayCreateVector(VT_VARIANT, 0, 1);
if (!psaStrings)
return;
BSTR bstr = SysAllocString(html);
if (bstr)
{
VARIANT* param;
HRESULT hr = SafeArrayAccessData(psaStrings, (LPVOID*)¶m);
if (SUCCEEDED(hr))
{
param->vt = VT_BSTR;
param->bstrVal = bstr;
hr = SafeArrayUnaccessData(psaStrings);
if (SUCCEEDED(hr))
{
doc2->write(psaStrings);
doc2->close();
}
}
}
// SafeArrayDestroy calls SysFreeString for each BSTR!
if (psaStrings)
SafeArrayDestroy(psaStrings);
}
//退出前要释放链接
void CtestWebBrowserDlg::OnOK()
{
ReleaseHTMLConnection();
CDialogEx::OnOK();
}
void CtestWebBrowserDlg::OnCancel()
{
ReleaseHTMLConnection();
CDialogEx::OnCancel();
}

test.html

[html] view plain copy

<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
</head>
<body>
<h1 id="myH1Tag">测试从H1标签能不能得到事件</h1>
<font id="myFontTag" color=#5a6571>测试能不能从font标签得到事件</font> <br />
<br />
<br />
<a id="idOfA" name="nameOfA" href="file:D:\Workspace\testWebBrowser\testWebBrowser\ThePageNeverReach.htm">测试禁止页面跳转</a><br/>
<a id="id2OfA" name="name2OfA" href="file:D:\Workspace\testWebBrowser\testWebBrowser\HTMLPage.htm">测试用户点击链接， C++后台得到消息！，并跳转到页面</a>
<form>
First name: <input id=‘firstname‘ type=‘text‘ name=‘firstname‘ /><br />
Last name: <input id=‘lastname‘ type=‘text‘ name=‘lastname‘ /><br />
Password: <input id=‘password‘ type=‘password‘ name=‘pwd‘ /><br><br />
<input type=‘radio‘ id=‘male‘ name=‘sex‘ value=‘male‘ />Male<br />
<input type=‘radio‘ id=‘female‘ name=‘sex‘ value=‘female‘ />Female<br /><br />
<input type=‘checkbox‘ id=‘bike‘ name=‘vehicle‘ value=‘Bike‘ />I have abdsmasterbike<br />
<input type=‘checkbox‘ id=‘car‘ name=‘vehicle‘ value=‘Car‘ />I have a car <br /><br />
<input type=‘button‘ id=‘ok‘ value=‘OK‘ /><br />
<input type=‘button‘ id=‘cancel‘ value=‘Cancel‘ /><br /><br />
</form>
</body>

http://blog.csdn.net/lee353086/article/details/38537415

测试C++代码与WebBrowser HTML的互动

原文：http://www.cnblogs.com/findumars/p/7635862.html

踩

(0)

评论一句话评论（0）

分享档案

更多>

2021年09月23日 (328)
2021年09月24日 (313)
2021年09月17日 (191)
2021年09月15日 (369)
2021年09月16日 (411)
2021年09月13日 (439)
2021年09月11日 (398)
2021年09月12日 (393)
2021年09月10日 (160)
2021年09月08日 (222)