From acc26b65347a2116e6c7cb1ad83b77a6b697a9da Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Benjamin=20Br=C3=A6strup=20Sayoc?= <benj5378@outlook.com>
Date: Thu, 12 Sep 2024 23:42:36 +0200
Subject: [PATCH] [Gui] Handle unset style preferences in clipboard about info

FIxes #16391
---
 src/Gui/Splashscreen.cpp | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/src/Gui/Splashscreen.cpp b/src/Gui/Splashscreen.cpp
index 28ebd96d39..16db98b366 100644
--- a/src/Gui/Splashscreen.cpp
+++ b/src/Gui/Splashscreen.cpp
@@ -881,9 +881,25 @@ void AboutDialog::copyToClipboard()
     }
     str << "\n";
 
+    // Add Stylesheet/Theme/Qtstyle information
     std::string styleSheet = App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/MainWindow")->GetASCII("StyleSheet");
     std::string theme = App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/MainWindow")->GetASCII("Theme");
-    std::string style = App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/MainWindow")->GetASCII("QtStyle");
+
+    #if QT_VERSION >= QT_VERSION_CHECK(6, 1, 0)
+        std::string style = qApp->style()->name().toStdString();
+    #else
+        std::string style = App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/MainWindow")->GetASCII("QtStyle");
+        if(style.empty()) {
+            style = "Qt default";
+        }
+    #endif
+
+    if(styleSheet.empty()) {
+        styleSheet = "unset";
+    }
+    if(theme.empty()) {
+        theme = "unset";
+    }
 
     str << "Stylesheet/Theme/QtStyle: "
         << QString::fromStdString(styleSheet) << "/"