From 4e2f8dbbebf797f749c53b09b1a4d5a2c1e38cbc Mon Sep 17 00:00:00 2001
From: Pavel Sanda <sanda@lyx.org>
Date: Tue, 16 Mar 2021 09:39:05 +0100
Subject: [PATCH] Qt4 compil fix

---
 src/frontends/qt/IconPalette.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/frontends/qt/IconPalette.cpp b/src/frontends/qt/IconPalette.cpp
index 8956a48c96..580b450aa3 100644
--- a/src/frontends/qt/IconPalette.cpp
+++ b/src/frontends/qt/IconPalette.cpp
@@ -27,7 +27,9 @@
 #include <QStyleOptionFrame>
 #include <QMouseEvent>
 #include <QVBoxLayout>
+#if QT_VERSION >= 0x060000
 #include <QWindow>
+#endif
 
 namespace lyx {
 namespace frontend {