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[256] = { 0 };
    GetClassName(hwndChild, className, 256);
    char url[4028] = { 0 };

    std::string class_name(className);
    if (class_name.compare("Edit") == 0)
    {
    
        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") == 0)
    {
        SendMessage(hwndChild, WM_GETTEXT, sizeof(url), (LPARAM)url);
        std::cout << "ComboBoxEx32 class : URL" << url << std::endl;

    }
    else if (class_name.compare("TabWindowClass") == 0)
    {
        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[256] = { 0 };
    
    GetClassName(hwndChild, className, 256);

    std::string class_name(className);
    //std::cout << "Window Class is:" << class_name << std::endl;
    if (class_name.compare("IEFrame") == 0)
    {
        EnumChildWindows(hwndChild, BrowserIEChildEnumProc, NULL);
    }
    else if (class_name.compare("Edit") == 0)
    {
        char url[4028] = { 0 };
        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 0;
}

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, 0);

    //给szItem和sDesc赋值
    HDDEDATA hData = DdeClientTransaction(NULL, 0, hConv, hszItem, CF_TEXT,
        XTYP_REQUEST, 5000, NULL); //5秒超时

    if (hData == NULL)
    {
        //请求数据失败
        printf("Request failed: %s
", szItem);
    }
    else
    {
        //成功获取到数据
        char szResult[1028];
        DdeGetData(hData, (unsigned char *)szResult, 1028, 0);

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

static void fetchFireFoxURL(){

    DWORD idDde = 0;
    HCONV HConversation;
    HSZ   Server = NULL;
    HSZ   Topic = NULL;

    DdeInitialize(&idDde, (PFNCALLBACK)DdeCallback, APPCMD_CLIENTONLY, 0);

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

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

    
    if (HConversation == 0)
    {
        DdeUninitialize(idDde);
    }
    
    char recvData[2048] = { 0 };
    //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 0;
}

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