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    TTable userTable = DBMgr::getdb()->query("SELECT K AS Names FROM S_CFG");
    vector<string> vec;
    for(int i=0;i<userTable.size();i++) {
        string stmp = userTable.getValue(i,"Names");
        vec.push_back("{\"id\":\""+stmp+"\",\"name\":\""+stmp+"\"}");
    }
    string json = "[" + StringUtil::join(vec, ",") + "]";
    wMDropdown1->setOptions(json, 0);

上面是字符串相加生成json

============多语言===========

下面是用json工具

#define LOCALE_STR(tag) getRuntime()->getILanguageMgr()->getTag(string("_L(\"")+tag+string("\")"))

void Frm09::onLoad() { vector<vector<KV_Str_Str>> vec1; vector<KV_Str_Str> vec;   // 选项1的id KV_Str_Str kv1; kv1.k = "id";//固定为id kv1.v = "0";//选项1的value vec.push_back(kv1); // 选项1的name KV_Str_Str kv2; kv2.k = "name";//固定为name kv2.v = LOCALE_STR("多语言标签1");//选项的名称(显示的文字) vec.push_back(kv2); // 选项1加入数组 vec1.push_back(vec);   //继续选项2......   //生成json string json1 = ""; Util::convertArrayToJson(vec1, json1); //设置给控件 wMDropdown2->setOptions(json1, 0); }