From fd766f1b26280313e0aed92f01e7944e51534341 Mon Sep 17 00:00:00 2001
From: Victor Zarubkin <v.s.zarubkin@gmail.com>
Date: Mon, 21 Oct 2019 09:06:26 +0300
Subject: [PATCH] fix old Qt build

---
 profiler_gui/window_header.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/profiler_gui/window_header.cpp b/profiler_gui/window_header.cpp
index 3d9d204..a67f3f8 100644
--- a/profiler_gui/window_header.cpp
+++ b/profiler_gui/window_header.cpp
@@ -108,7 +108,7 @@ WindowHeader::WindowHeader(const QString& title, Buttons buttons, QWidget& paren
 #if !defined(_WIN32)
     if (m_maximizeButton != nullptr || m_minimizeButton != nullptr)
     {
-        parent->setWindowFlag(Qt::SubWindow, true);
+        parent->setWindowFlags(parent->windowFlags() | Qt::SubWindow);
     }
 #endif