From 2c62ac41c179bca46dc151e3749747f076ef1fb3 Mon Sep 17 00:00:00 2001
From: Paul Cornett <paulcor@users.noreply.github.com>
Date: Sat, 23 May 2020 11:14:00 -0700
Subject: [PATCH] Set WM_CLASS class name as app display name

Gnome seems to use it as a fallback display name with X11. By default, it will
be the capitalized program name, which is what GTK would set it to anyway.
---
 src/gtk/toplevel.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/gtk/toplevel.cpp b/src/gtk/toplevel.cpp
index 4a38a00b86..d7f94d8b3a 100644
--- a/src/gtk/toplevel.cpp
+++ b/src/gtk/toplevel.cpp
@@ -25,6 +25,7 @@
 
 #ifndef WX_PRECOMP
     #include "wx/frame.h"
+    #include "wx/app.h"     // GetAppDisplayName()
     #include "wx/icon.h"
     #include "wx/log.h"
 #endif
@@ -629,6 +630,11 @@ bool wxTopLevelWindowGTK::Create( wxWindow *parent,
 
     m_title = title;
 
+#ifndef __WXGTK4__
+    // Gnome uses class as display name
+    gdk_set_program_class(wxTheApp->GetAppDisplayName().utf8_str());
+#endif
+
     // NB: m_widget may be !=NULL if it was created by derived class' Create,
     //     e.g. in wxTaskBarIconAreaGTK
     if (m_widget == NULL)