Log4Qt 是Apache Log4J 的Qt移植版，所以看Log4J的资料应该是最直接有效的(因为Log4Qt的直接资料太少了)。 Log4Qt主要是用来记录日志(有助于程序调试)。-Log4Qt is Apache Log4J portable version of Qt, so look Log4J information should be the most direct and effective (because of too little direct information L