[zz]用Windows預設瀏覽器開啟網頁

Windows預設瀏覽器的索引值在註冊表中的存放目錄是‘HKEY_CLASSES_ROOT/htmlfile/shell/open/command’。
　　實現代碼如下：

void CXHDeskDlg::OnBtnWeb()
{
    HKEY hkRoot,hSubKey; //定義註冊表根關鍵字及子關鍵字
    char ValueName[256];
    unsigned char DataValue[256];
    unsigned long cbValueName=256;
    unsigned long cbDataValue=256;
    char ShellChar[256]; //定義命令列
    DWORD dwType;

    //開啟註冊表根關鍵字
    if(RegOpenKey(HKEY_CLASSES_ROOT,NULL,&hkRoot)==ERROR_SUCCESS)
    {
    //開啟子關鍵字
        if(RegOpenKeyEx(hkRoot,
        "htmlfile//shell//open//command",
                    0,
                    KEY_ALL_ACCESS,
                    &hSubKey)==ERROR_SUCCESS)
        {
            //讀取註冊表，擷取預設瀏覽器的命令列    
            RegEnumValue(hSubKey,
                0,
                        ValueName,
                        &cbValueName,
                        NULL,
                        &dwType,
                        DataValue,
                        &cbDataValue);
            // 調用參數（首頁地址）賦值
            strcpy(ShellChar,(char *)DataValue);
            strcat(ShellChar," www.neaase.net/~xiaohui");
            // 啟動瀏覽器
            WinExec(ShellChar,SW_SHOW);

        }
        else
            MessageBox("WEB瀏覽器開啟錯誤！","錯誤",MB_OK);
    }
    else
        MessageBox("WEB瀏覽器開啟錯誤！","錯誤",MB_OK);
    //關閉註冊表
    RegCloseKey(hSubKey);
    RegCloseKey(hkRoot);
}