| zhengtianzuo | 2017-10-16 14:25 |
zhengtianzuo系列-Qml写日志大家都知道通过Q_INVOKABLE可以让qml直接访问c++类的接口函数.``` void outputMessage(QtMsgType type, const QMessageLogContext &context, const QString &msg) { static QMutex mutex; mutex.lock(); QString text; switch(type) { case QtDebugMsg: text = QString("Debug:"); break; case QtWarningMsg: text = QString("Warning:"); break; case QtCriticalMsg: text = QString("Critical:"); break; case QtFatalMsg: text = QString("Fatal:"); } QString message = ""; if (context.file != nullptr) { QString context_info = QString("File:(%1) Line:(%2)").arg(QString(context.file)).arg(context.line); QString current_date_time = QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss ddd"); QString current_date = QString("(%1)").arg(current_date_time); message = QString("%1 %2 %3 %4").arg(text).arg(context_info).arg(msg).arg(current_date); } else { message = msg; } QFile file("log.txt"); file.open(QIODevice::WriteOnly | QIODevice::Append); QTextStream text_stream(&file); text_stream << message << "\r\n"; file.flush(); file.close(); mutex.unlock(); } QmlLog4Qml::QmlLog4Qml() { qInstallMessageHandler(outputMessage); } void QmlLog4Qml::qDebug_Info(int type, QString strInfo) { QMessageLogContext context; context.file = nullptr; outputMessage((QtMsgType)type, context, strInfo); } ```  需要完整代码请访问 QtQuickExamples |
|