From 9c76bdefcad85e631364c3e0bad9fd484cad78ee Mon Sep 17 00:00:00 2001
From: Teodor Petrov <fuscated@gmail.com>
Date: Sat, 18 Apr 2020 14:15:24 +0300
Subject: [PATCH 1/2] Implement wxSYS_COLOUR_HOTLIGHT for GTK2 (requires GTK+
 >= 2.10)

---
 src/gtk/settings.cpp | 26 ++++++++++++++++++++++++--
 1 file changed, 24 insertions(+), 2 deletions(-)

diff --git a/src/gtk/settings.cpp b/src/gtk/settings.cpp
index a3868eb217..aa8a30741e 100644
--- a/src/gtk/settings.cpp
+++ b/src/gtk/settings.cpp
@@ -87,6 +87,19 @@ static GtkWidget* ButtonWidget()
     return s_widget;
 }
 
+static GtkWidget* LinkButtonWidget()
+{
+    static GtkWidget *s_widget;
+    if (s_widget == NULL)
+    {
+        s_widget = gtk_link_button_new("http://test.com");
+        g_object_add_weak_pointer(G_OBJECT(s_widget), (void**)&s_widget);
+        gtk_container_add(ContainerWidget(), s_widget);
+        gtk_widget_ensure_style(s_widget);
+    }
+    return s_widget;
+}
+
 static GtkWidget* ListWidget()
 {
     static GtkWidget* s_widget;
@@ -623,6 +636,16 @@ static const GtkStyle* ButtonStyle()
     return gtk_widget_get_style(ButtonWidget());
 }
 
+static const wxColor LinkButtonStyle()
+{
+    GdkColor *link_color = NULL;
+    gtk_widget_style_get(LinkButtonWidget(), "link-color", &link_color, NULL);
+    if (link_color)
+        return wxColor(*link_color);
+    else
+        return *wxBLUE;
+}
+
 static const GtkStyle* ListStyle()
 {
     return gtk_widget_get_style(ListWidget());
@@ -748,8 +771,7 @@ wxColour wxSystemSettingsNative::GetColour( wxSystemColour index )
             break;
 
         case wxSYS_COLOUR_HOTLIGHT:
-            // TODO
-            color = *wxBLACK;
+            color = LinkButtonStyle();
             break;
 
         case wxSYS_COLOUR_MAX:

From 1b4a5ece642129ca872f8fa8404735e801262a94 Mon Sep 17 00:00:00 2001
From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Sat, 18 Apr 2020 17:55:50 +0200
Subject: [PATCH 2/2] Add GTK 2.10 version checks around code using
 GtkLinkButton

Blindly repair compiling/running against GTK < 2.10 after the previous
commit.
---
 src/gtk/settings.cpp | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/src/gtk/settings.cpp b/src/gtk/settings.cpp
index aa8a30741e..3063f4fcaf 100644
--- a/src/gtk/settings.cpp
+++ b/src/gtk/settings.cpp
@@ -87,10 +87,11 @@ static GtkWidget* ButtonWidget()
     return s_widget;
 }
 
+#if GTK_CHECK_VERSION(2,10,0)
 static GtkWidget* LinkButtonWidget()
 {
     static GtkWidget *s_widget;
-    if (s_widget == NULL)
+    if (s_widget == NULL && wx_is_at_least_gtk2(10))
     {
         s_widget = gtk_link_button_new("http://test.com");
         g_object_add_weak_pointer(G_OBJECT(s_widget), (void**)&s_widget);
@@ -99,6 +100,7 @@ static GtkWidget* LinkButtonWidget()
     }
     return s_widget;
 }
+#endif // GTK 2.10+
 
 static GtkWidget* ListWidget()
 {
@@ -636,14 +638,16 @@ static const GtkStyle* ButtonStyle()
     return gtk_widget_get_style(ButtonWidget());
 }
 
-static const wxColor LinkButtonStyle()
+static const wxColor LinkButtonColor()
 {
+#if GTK_CHECK_VERSION(2,10,0)
     GdkColor *link_color = NULL;
     gtk_widget_style_get(LinkButtonWidget(), "link-color", &link_color, NULL);
     if (link_color)
         return wxColor(*link_color);
-    else
-        return *wxBLUE;
+#endif // GTK 2.10+
+
+    return *wxBLUE;
 }
 
 static const GtkStyle* ListStyle()
@@ -771,7 +775,7 @@ wxColour wxSystemSettingsNative::GetColour( wxSystemColour index )
             break;
 
         case wxSYS_COLOUR_HOTLIGHT:
-            color = LinkButtonStyle();
+            color = LinkButtonColor();
             break;
 
         case wxSYS_COLOUR_MAX: