QDebug 信息输出到控件

    static ZynqSlaveInfo *m_mainWin;
    static void setText(QString str);

#include <QMutex>
#include <QDateTime>
void myMsgOutput(QtMsgType type, const QMessageLogContext &context, const QString& msg);
ZynqSlaveInfo *ZynqSlaveInfo::m_mainWin = nullptr;

ZynqSlaveInfo::ZynqSlaveInfo(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::ZynqSlaveInfo)
{
    ui->setupUi(this);
    InitSlaveInfo();
}
ZynqSlaveInfo::~ZynqSlaveInfo()
{
    delete ui;
}
void ZynqSlaveInfo::InitSlaveInfo()
{
    m_mainWin = this;
    qInstallMessageHandler(myMsgOutput);
}

void ZynqSlaveInfo::setText(QString str)
{
    m_mainWin->ui->plainTextEdit_logShow->insertPlainText(str);
    m_mainWin->ui->plainTextEdit_logShow->insertPlainText("\n");
}
void myMsgOutput(QtMsgType type, const QMessageLogContext &context, const QString& msg)
{
    static QMutex mutex;
    Q_UNUSED(type);
    Q_UNUSED(context);
    mutex.lock();
#if 0
    QString time=QDateTime::currentDateTime().toString(QString("[ yyyy-MM-dd HH:mm:ss:zzz ]"));
    QString mmsg;
    switch(type)
    {
    case QtDebugMsg:
        mmsg=QString("%1: Debug:\t%2 (file:%3, line:%4, func: %5)").arg(time).arg(msg).arg(QString(context.file)).arg(context.line).arg(QString(context.function));
        break;
    case QtInfoMsg:
        mmsg=QString("%1: Info:\t%2 (file:%3, line:%4, func: %5)").arg(time).arg(msg).arg(QString(context.file)).arg(context.line).arg(QString(context.function));
        break;
    case QtWarningMsg:
        mmsg=QString("%1: Warning:\t%2 (file:%3, line:%4, func: %5)").arg(time).arg(msg).arg(QString(context.file)).arg(context.line).arg(QString(context.function));
        break;
    case QtCriticalMsg:
        mmsg=QString("%1: Critical:\t%2 (file:%3, line:%4, func: %5)").arg(time).arg(msg).arg(QString(context.file)).arg(context.line).arg(QString(context.function));
        break;
    case QtFatalMsg:
        mmsg=QString("%1: Fatal:\t%2 (file:%3, line:%4, func: %5)").arg(time).arg(msg).arg(QString(context.file)).arg(context.line).arg(QString(context.function));
        abort();
    }
    /*QFile file("debug.txt");
    file.open(QIODevice::ReadWrite | QIODevice::Append);
    QTextStream stream(&file);
    stream << mmsg << "\r\n";
    file.flush();
    file.close();*/
#endif
    ZynqSlaveInfo::setText(msg);
    mutex.unlock();
}