From d4fd9d9ae801f6eecc1e355b1bd4fcbbaaf02916 Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Wed, 24 May 2023 10:20:52 +0200
Subject: [PATCH] Gui: also print category string of Qt messages

---
 src/Gui/Application.cpp | 21 +++++++++++++++------
 1 file changed, 15 insertions(+), 6 deletions(-)

diff --git a/src/Gui/Application.cpp b/src/Gui/Application.cpp
index 07848d0a8a..b124a44e64 100644
--- a/src/Gui/Application.cpp
+++ b/src/Gui/Application.cpp
@@ -1753,26 +1753,35 @@ _qt_msg_handler_old old_qtmsg_handler = nullptr;
 
 void messageHandler(QtMsgType type, const QMessageLogContext &context, const QString &msg)
 {
-    Q_UNUSED(context);
+    QByteArray output;
+    if (context.category && strcmp(context.category, "default") != 0) {
+        output.append('(');
+        output.append(context.category);
+        output.append(')');
+        output.append(' ');
+    }
+
+    output.append(msg.toUtf8());
+
     switch (type)
     {
     case QtInfoMsg:
     case QtDebugMsg:
 #ifdef FC_DEBUG
-        Base::Console().Message("%s\n", msg.toUtf8().constData());
+        Base::Console().Message("%s\n", output.constData());
 #else
         // do not stress user with Qt internals but write to log file if enabled
-        Base::Console().Log("%s\n", msg.toUtf8().constData());
+        Base::Console().Log("%s\n", output.constData());
 #endif
         break;
     case QtWarningMsg:
-        Base::Console().Warning("%s\n", msg.toUtf8().constData());
+        Base::Console().Warning("%s\n", output.constData());
         break;
     case QtCriticalMsg:
-        Base::Console().Error("%s\n", msg.toUtf8().constData());
+        Base::Console().Error("%s\n", output.constData());
         break;
     case QtFatalMsg:
-        Base::Console().Error("%s\n", msg.toUtf8().constData());
+        Base::Console().Error("%s\n", output.constData());
         abort();                    // deliberately core dump
     }
 #ifdef FC_OS_WIN32