#include "global.h" QUrl apiBackendUrl("http://localhost:8000/api/v1/"); // 定义并初始化全局变量 QString labLat("未知"); QString labLon("未知"); QString globalAuthority; QString firewidgetPort("COM1"); QString gpsPort("COM3"); QString databaseHost("127.0.0.1"); QString mqttClientId("mqttclient_OnDevPC"); bool isShowTriggeringWidget = true;