Qt下写日志文件的函数

#include <QDateTime>

#include <QFile>

#include <QTextCodec>

QFile m_logFile;

void logMsg(const QString &str)

{

m_logFile.setFileName("./***.log");

m_logFile.open(QIODevice::ReadWrite | QIODevice::Append | QIODevice::Text);

m_logFile.write((QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss  ") + str + "\r\n").toLocal8Bit().data());

m_logFile.flush();

m_logFile.close();

}