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Merge pull request #465 from ghutchis/windows-debug-log
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Add a message handler to grab debug / warnings on Windows
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ghutchis authored Feb 6, 2024
2 parents a27da73 + afc3c51 commit bf280f0
Showing 1 changed file with 66 additions and 0 deletions.
66 changes: 66 additions & 0 deletions avogadro/avogadro.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,10 @@
#include <QtCore/QStandardPaths>
#include <QtCore/QTranslator>

// install a message handler (for Windows)
#include <QFile>
#include <QTextStream>

#include "application.h"
#include "mainwindow.h"

Expand All @@ -31,6 +35,65 @@ void removeMacSpecificMenuItems();

#define DEBUG false

// Based on https://doc.qt.io/qt-5/qtglobal.html#qInstallMessageHandler
void myMessageOutput(QtMsgType type, const QMessageLogContext& context,
const QString& msg)
{
QByteArray localMsg = msg.toLocal8Bit();
QString file = context.file;
QString function = context.function;
// get current date and time
QDateTime dateTime = QDateTime::currentDateTime();
QString dateTimeString = dateTime.toString("yyyy-MM-dd hh:mm:ss");

QString message;
switch (type) {
case QtInfoMsg:
message = QString("Info: %1 (%2:%3, %4)\n")
.arg(localMsg.constData())
.arg(file)
.arg(context.line)
.arg(function);
break;
case QtWarningMsg:
message = QString("Warning: %1 (%2:%3, %4)\n")
.arg(localMsg.constData())
.arg(file)
.arg(context.line)
.arg(function);
break;
case QtCriticalMsg:
message = QString("Critical: %1 (%2:%3, %4)\n")
.arg(localMsg.constData())
.arg(file)
.arg(context.line)
.arg(function);
break;
case QtFatalMsg:
message = QString("Fatal: %1 (%2:%3, %4)\n")
.arg(localMsg.constData())
.arg(file)
.arg(context.line)
.arg(function);
break;
case QtDebugMsg:
default:
message = QString("Debug: %1 (%2:%3, %4)\n")
.arg(localMsg.constData())
.arg(file)
.arg(context.line)
.arg(function);
break;
}

QString writableDocs =
QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation);
QFile outFile(writableDocs + "/avogadro2.log");
outFile.open(QIODevice::WriteOnly | QIODevice::Append);
QTextStream ts(&outFile);
ts << message << endl;
}

int main(int argc, char* argv[])
{
#ifdef Q_OS_MAC
Expand All @@ -51,6 +114,9 @@ int main(int argc, char* argv[])
#ifdef Q_OS_WIN
// We need to ensure desktop OpenGL is loaded for our rendering.
QCoreApplication::setAttribute(Qt::AA_UseDesktopOpenGL);

// install the message handler (goes to Documents / avogadro2.log)
qInstallMessageHandler(myMessageOutput);
#endif

Avogadro::Application app(argc, argv);
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