win32获取浏览器当前Tab的URL

代码都是win10上测试的

1. 获取IE的URL，Enum IE窗口的子句柄，找到className为Edit的句柄，然后用SendMessage WM_GETTEXT消息来获取：

上代码：

 #include <iostream>
 #include <string>
 #include <windows.h>

 BOOL CALLBACK BrowserIEChildEnumProc(HWND hwndChild, LPARAM lParam)
 {
     char className[] = {  };
     GetClassName(hwndChild, className, );
     char url[] = {  };

     std::string class_name(className);
     if (class_name.compare("Edit") == )
     {

         SendMessage(hwndChild, WM_GETTEXT, sizeof(url), (LPARAM)url); // 必须用SendMessage, 不然用GetWindowText会得不到，因为是远程进程
         std::cout << "IE Level Edit class : URL" << url << std::endl;
     }
     else if (class_name.compare("ComboBoxEx32") == )
     {
         SendMessage(hwndChild, WM_GETTEXT, sizeof(url), (LPARAM)url);
         std::cout << "ComboBoxEx32 class : URL" << url << std::endl;

     }
     else if (class_name.compare("TabWindowClass") == )
     {
         SendMessage(hwndChild, WM_GETTEXT, sizeof(url), (LPARAM)url);
         std::cout << "TabWindowClass class : URL" << url << std::endl;
     }
     else
     {

     }

     return TRUE;
 }

 BOOL CALLBACK BrowserEnumProc(HWND hwndChild, LPARAM lParam)
 {
     char className[] = {  };

     GetClassName(hwndChild, className, );

     std::string class_name(className);
     //std::cout << "Window Class is:" << class_name << std::endl;
     if (class_name.compare("IEFrame") == )
     {
         EnumChildWindows(hwndChild, BrowserIEChildEnumProc, NULL);
     }
     else if (class_name.compare("Edit") == )
     {
         char url[] = {  };
         SendMessage(hwndChild, WM_GETTEXT, sizeof(url), (LPARAM)url);
         std::cout << "Top Level Edit class : URL" << url << std::endl;
     }
     //else if ()
     //{

     //}

     return TRUE;
 }

 int main()
 {
     EnumChildWindows(NULL, BrowserEnumProc, NULL);

     int d;
     std::cin >> d;
     return ;
 }

通过windows的动态数据交换（DDE）技术来获取FireFox浏览器的URL（不支持Opera 和Chrome）：

 #include <iostream>
 #include <string>
 #include <windows.h>

 #include <ddeml.h>

 HDDEDATA CALLBACK
 DdeCallback(UINT uType, UINT uFmt, HCONV hconv,
 HSZ hsz1, HSZ hsz2, HDDEDATA hdata,
 DWORD dwData1, DWORD dwData2)
 {
     return ((HDDEDATA)NULL);
 }

 //请求数据
 void DDERequest(DWORD idInst, HCONV hConv, char* szItem, char* sDesc)
 {
     HSZ hszItem = DdeCreateStringHandle(idInst, szItem, );

     //给szItem和sDesc赋值
     HDDEDATA hData = DdeClientTransaction(NULL, , hConv, hszItem, CF_TEXT,
         XTYP_REQUEST, , NULL); //5秒超时

     if (hData == NULL)
     {
         //请求数据失败
         printf("Request failed: %s\n", szItem);
     }
     else
     {
         //成功获取到数据
         char szResult[];
         DdeGetData(hData, (unsigned char *)szResult, , );

         printf("Request Success: %s\n", szResult);
     }
 }

 static void fetchFireFoxURL(){

     DWORD idDde = ;
     HCONV HConversation;
     HSZ   Server = NULL;
     HSZ   Topic = NULL;

     DdeInitialize(&idDde, (PFNCALLBACK)DdeCallback, APPCMD_CLIENTONLY, );

     Server = DdeCreateStringHandle(idDde, "FireFox", CP_WINANSI);
     Topic = DdeCreateStringHandle(idDde, "WWW_GetWindowInfo", CP_WINANSI);

     HConversation = DdeConnect(idDde, Server, Topic, NULL);

     if (HConversation == )
     {
         DdeUninitialize(idDde);
     }

     char recvData[] = {  };
     //请求数据
     DDERequest(idDde, HConversation, "\\Doc", recvData);

     //断开连接,释放资源
     DdeDisconnect(HConversation);
     DdeUninitialize(idDde);

 }

 int main()
 {

     fetchFireFoxURL();

     int d;
     std::cin >> d;
     return ;
 }

references:

https://github.com/heenbo/my_test_c/blob/140f546b72ca7027fbd135978f236f7946ad2822/15_emacs/emacs-25.1/nt/ddeclient.c

https://msdn.microsoft.com/en-us/library/windows/desktop/ms648774(v=vs.85).aspx

https://msdn.microsoft.com/en-us/library/windows/desktop/ms648775(v=vs.85).aspx

https://autohotkey.com/board/topic/17633-retrieve-addressbar-of-firefox-through-dde-message/page-2

http://bbs.csdn.net/topics/360011960

http://www.delphitop.com/html/xitong/1763.html

https://answers.microsoft.com/en-us/windows/forum/windows_8-networking/get-safari-browser-url-in-windows-application/b793cdb8-415e-4d4a-94ab-c35e6ea08dd2

http://stackoverflow.com/questions/3579649/get-url-from-browser-to-c-sharp-application

http://stackoverflow.com/questions/5317642/retrieve-current-url-from-c-sharp-windows-forms-application/33191637#33191637