From 838bfc04612dd57dd844f28a98d8df7435c00a7b Mon Sep 17 00:00:00 2001
From: Syres916 <46537884+Syres916@users.noreply.github.com>
Date: Wed, 24 Jul 2024 05:01:21 +0100
Subject: [PATCH] [Start] Fix ThemeAccentColors not populated... (#15574)

* [Start] Fix ThemeAccentColors not populated...

...on some versions of Qt

* [Start] Only apply if the ThemeAccentColor1 does not exist

* [Start] Fix Lint feedback

* [Start] Set constants

* [Start] Fix new Lint feedback
---
 src/Mod/Start/Gui/ThemeSelectorWidget.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/Mod/Start/Gui/ThemeSelectorWidget.cpp b/src/Mod/Start/Gui/ThemeSelectorWidget.cpp
index 44d3bb843a..424ab30c89 100644
--- a/src/Mod/Start/Gui/ThemeSelectorWidget.cpp
+++ b/src/Mod/Start/Gui/ThemeSelectorWidget.cpp
@@ -141,6 +141,16 @@ void ThemeSelectorWidget::themeChanged(Theme newTheme)
             prefPackManager->apply("FreeCAD Light");
             break;
     }
+    ParameterGrp::handle hGrp =
+        App::GetApplication().GetParameterGroupByPath("User parameter:BaseApp/Preferences/Themes");
+    const unsigned long nonExistentColor = -1434171135;
+    const unsigned long defaultAccentColor = 1434171135;
+    unsigned long longAccentColor1 = hGrp->GetUnsigned("ThemeAccentColor1", nonExistentColor);
+    if (longAccentColor1 == nonExistentColor) {
+        hGrp->SetUnsigned("ThemeAccentColor1", defaultAccentColor);
+        hGrp->SetUnsigned("ThemeAccentColor2", defaultAccentColor);
+        hGrp->SetUnsigned("ThemeAccentColor3", defaultAccentColor);
+    }
 }
 
 bool ThemeSelectorWidget::eventFilter(QObject* object, QEvent* event)