MFC使用谷歌内核

MFC调用cef

1、初始化

m_callBack 是为了将消息返回到主界面的回调类

 1 int CCEFLibrary::InitCef(CCefCallback* callBack)
 2 {
 3     m_callBack = callBack;
 4     CefRefPtr<ClientAppRender> app(new ClientAppRender());
 5     CefSettings settings;
 6     //settings.command_line_args_disabled = TRUE;
 7     settings.no_sandbox = 0;
 8     CefSettingsTraits::init(&settings);
 9     settings.multi_threaded_message_loop = true;
10     settings.remote_debugging_port = 8088;//如果不定义，则不能运行调试工具
11                                           //settings.single_process = true;
12 
13     CefMainArgs mainArgs;
14     CefRefPtr<CefApp> cefApp;
15     cefApp = app;
16 
17     CefInitialize(mainArgs, settings, cefApp, NULL);
18     return 0;
19 }

2、展示页面

函数的index 是为了项目需要额外添加的索引，一般直接使用else里面的代码内容即可；

 1 int CCEFLibrary::CreateBrowser(int index, RECT rect, HWND hWnd, const std::wstring & url)
 2 {
 3     std::map<int, CefRefPtr<CSimpleClient>>::iterator itr = m_MapSimpleClient.find(index);
 4     if (itr != m_MapSimpleClient.end())
 5     {
 6         itr->second->GetBrowser()->GetMainFrame()->LoadURL(url);
 7         //m_simpleClient->GetBrowser()->GetMainFrame()->LoadURL(cefStrUrl);
 8     }
 9     else
10     {
11         CefRefPtr<CSimpleClient> client(new CSimpleClient());
12         client->SetCallBack(m_callBack);
13         m_MapSimpleClient[index] = client;
14         
15         CefWindowInfo winInfo;
16         winInfo.SetAsChild(hWnd, rect);
17         const CefString cefStrUrl(url);
18         CefBrowserSettings browserSettings;
19         browserSettings.web_security = STATE_DISABLED;
20         CefBrowserHost::CreateBrowser(winInfo, client, cefStrUrl, browserSettings, NULL, NULL);
21 
22         
23     }    
24     return 0;
25 }

3、MFC调用js

test.html

 1 <!DOCTYPE html>
 2 <html>
 3   <!--
 4   Copyright (c) 2016 foruok. All rights reserved.
 5   欢迎关注foruok的微信订阅好“程序视界”。
 6   -->
 7 <head>
 8     <script type="text/javascript">
 9       function Login(){
10         window.NativeLogin(document.getElementById("userName").value, document.getElementById("password").value);
11       }
12       function GetId2(){
13         GetId(2);
14       }
15       function GetId(i)
16       {
17         alert("get id from native by extensions i:" + i);
18         return "i";
19       }
20     </script>
21   <title>CEF JS Integration</title>
22 </head>
23 
24 <body>
25 <h3>Call into native by Window bindings:</h3>
26 <form>
27 UserName: <input type="text" id="userName" />&nbsp;&nbsp;Password: 
28 <input type="text" id="password" />&nbsp;&nbsp;<input  type="button" value="Login" onclick="Login()"/>
29 </form>
30 <hr>
31 <h3>Call into native by js extensions:</h3>
32 <input  type="button" value="GetId2" onclick="GetId2()"/>
33 
34 </html>

View Code

1 void CCEF_MFCDlg::OnBnClickedButton1()
2 {
3     // TODO: 在此添加控件通知处理程序代码
4     m_cef->ExecJsCode(1, L"GetId(33);");
5 }

传多个参数：

CString str;
//str.Format(L"GetId(%d,%d);",3,7);
str.Format(L"Getstr('%s','%s');", L"600012", L"123");
m_cef->ExecJsCode(1, str.GetBuffer());

 1 bool CCEFLibrary::ExecJsCode(int index, const std::wstring & strJsCode)
 2 {
 3     std::map<int, CefRefPtr<CSimpleClient>>::iterator itr = m_MapSimpleClient.find(index);
 4     if (itr != m_MapSimpleClient.end())
 5     {
 6         itr->second->ExecJsCode(strJsCode);
 7         return true;        
 8     }
 9     return 0;
10 }

1 void CSimpleClient::ExecJsCode(const std::wstring & strJsCode)
2 {
3     if (m_cefBrowser)
4     {
5         m_cefBrowser->GetMainFrame()->ExecuteJavaScript(strJsCode, m_cefBrowser->GetMainFrame()->GetURL(), 0);
6     }
7 }

4、js调用C++代码

window.NativeLogin(document.getElementById("userName").value, document.getElementById("password").value); 回调到cef库中：

 1 bool CCefV8HandlerEx::Execute(const CefString& name, 
 2     CefRefPtr<CefV8Value> object, 
 3     const CefV8ValueList& arguments, 
 4     CefRefPtr<CefV8Value>& retval, 
 5     CefString& exception)
 6 {
 7 
 8     if (name == "NativeLogin")
 9     {
10         if (arguments.size() == 2)
11         {
12             
13             CefString strUser = arguments.at(0)->GetStringValue();
14             CefString strPassword = arguments.at(1)->GetStringValue();
15 
16             CefRefPtr<CefProcessMessage> msg = CefProcessMessage::Create("login_msg");
17             // Retrieve the argument list object.
18             CefRefPtr<CefListValue> args = msg->GetArgumentList();
19             // Populate the argument values.
20             args->SetSize(2);
21             args->SetString(0, strUser);
22             args->SetString(1, strPassword);
23 
24             // Send the process message to the browser process.
25             CefV8Context::GetCurrentContext()->GetBrowser()->GetMainFrame()->SendProcessMessage(PID_BROWSER, msg);
26         }        
27         else
28         {
29             retval = CefV8Value::CreateInt(1);
30         }
31         return true;
32     }
33     return false;
34 }

 1 bool CSimpleClient::OnProcessMessageReceived(CefRefPtr<CefBrowser> browser,
 2     CefRefPtr<CefFrame> frame,
 3     CefProcessId source_process,
 4     CefRefPtr<CefProcessMessage> message)
 5 {
 6     const std::string& messageName = message->GetName();
 7     if (messageName == "login_msg")
 8     {
 9         // extract message
10         CefRefPtr<CefListValue> args = message->GetArgumentList();
11         CefString strUser = args->GetString(0);
12         CefString strPassword = args->GetString(1);
13         
14         m_callBack->RelLogin(strUser, strPassword);
15         return true;
16     }
17     return false;
18 }

1 void CefCallBack::RelLogin(std::wstring user, std::wstring pwd)
2 {
3     //::PostMessage(m_phWnd, WM_LOGIN_CLICK, (WPARAM)strUser.c_str(), (LPARAM)strPassword.c_str());
4     std::wstring* NUser = new std::wstring(user);
5     std::wstring* NPwd = new std::wstring(pwd);
6     ::PostMessage(m_hwnd, WM_LOGIN_CLICK, (WPARAM)NUser, (LPARAM)NPwd);
7 }

从这里回到MFC主界面；在WM_LOGIN_CLICK消息中处理收到js中点击按钮的消息；这里使用 PostMessage，一切正常；我使用 SendMessage 我在消息中弹框代码就会崩溃，不知道为啥？

完整代码下载路径 https://download.csdn.net/download/qq_32197003/12526553

MFC使用谷歌内核

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